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## The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If the energy stored by the spring is 12 joules, what is the approximate weight of the spring in pounds?

The is the concept of algebra, the weight of the spring can be modeled by the equation;
w=0.9sqrt E
where;
=energy in joules;
thus the weight of the spring when the energy is 12 j will be:
w=0.9sqrt12
w=3.18 g

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## ? A body is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150N. What is the tension in each wire?

So, the weight is supported by the tension in the two wires, but only part of the tension goes in holding the body: the vertical component.

If the angle between the ceiling and the wire is 40 deg, then the vertical component is

T_y = T * sin(40),

There are two wires, so together they do

2*T*sin(40)

And all this holds the weight of the body, so:

2*T*sin(40)=150 —-> T = 75/sin(40)~116.68 N,

Notice how it is larger than 150N (both wires is ~ 233 N), as the angle becomes smaller, there is less tension that is vertical, so one needs more tension to make the vertical component as large as (half) the weight of the body

Hope it helps!

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## A cereal company claims that the mean weight of the cereal in its packets is at least 14 oz. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.

A cereal company claims that the mean weight of the cereal in its packets is at least 14 oz. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.

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## Which statement about weight control is false exercise help to control our way by burning calories to lose weight we need to burn more calories than we consume each day people burn calories at different rates depending on metabolism weight control is the primary benefit of exercise

Which statement about weight control is false exercise help to control our way by burning calories to lose weight we need to burn more calories than we consume each day people burn calories at different rates depending on metabolism weight control is the primary benefit of exercise

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## If 0.9 grams of calcium burnt in air the weight of product formed is?

If 0.9 grams of calcium burnt in air the weight of product formed is?

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## Which statement BEST describes a lifestyle with healthy eating habits? A. John and his family follow a diet plan that consists of healthy foods. If they begin to gain weight, they eat only protein until their weight drops to where they want it to be. B. Shannon and Shandra watch their weight carefully. They eat diets with no fat or sweets. Because of their plan, they stay very thin. C. Andrew is a wrestler and needs to stay at a consistent weight. In order to do so, he follows the dietary recommendations of a dietician carefully and always maintains a balanced diet. D. Maria and her brother Jose are obsessed with their appearance. In order to maintain a super-skinny look, Maria eats a low-calorie, no-fat, high-protein diet. In order to stay bulked up, Jose eats all protein and fats.

Which statement BEST describes a lifestyle with healthy eating habits? A. John and his family follow a diet plan that consists of healthy foods. If they begin to gain weight, they eat only protein until their weight drops to where they want it to be. B. Shannon and Shandra watch their weight carefully. They eat diets with no fat or sweets. Because of their plan, they stay very thin. C. Andrew is a wrestler and needs to stay at a consistent weight. In order to do so, he follows the dietary recommendations of a dietician carefully and always maintains a balanced diet. D. Maria and her brother Jose are obsessed with their appearance. In order to maintain a super-skinny look, Maria eats a low-calorie, no-fat, high-protein diet. In order to stay bulked up, Jose eats all protein and fats.

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## You are asked to write an article for the school newspaper about fad diets. Which of the following paragraphs would be the most factual? A. Fad diets are extreme and do not include balanced meals. They are usually hard to maintain because of their extreme restrictions. Also, the weight one loses while on a fad diet is generally gained back as soon as a person stops dieting. B. Fad diets can be fun because they rarely restrict what you eat. Plus, they induce weight loss in healthy, maintainable ways, and involve techniques that can improve your flexibility. C. Fad diets, which are necessary for fast weight loss, include healthy, well-balance meals. Unfortunately, the weight you lose while on a fad diet is usually gained back once you stop dieting. D. Fad diets are an important part of a diet regimen. They can induce lifelong weight loss and weight gain, which makes them best for young people who want to lose weight quickly.

You are asked to write an article for the school newspaper about fad diets. Which of the following paragraphs would be the most factual? A. Fad diets are extreme and do not include balanced meals. They are usually hard to maintain because of their extreme restrictions. Also, the weight one loses while on a fad diet is generally gained back as soon as a person stops dieting. B. Fad diets can be fun because they rarely restrict what you eat. Plus, they induce weight loss in healthy, maintainable ways, and involve techniques that can improve your flexibility. C. Fad diets, which are necessary for fast weight loss, include healthy, well-balance meals. Unfortunately, the weight you lose while on a fad diet is usually gained back once you stop dieting. D. Fad diets are an important part of a diet regimen. They can induce lifelong weight loss and weight gain, which makes them best for young people who want to lose weight quickly.

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## A fruit company delivers its fruit in two types of boxes: large and small. A delivery of 3 large boxes and 5 small boxes has a total weight of 135 kilograms. A delivery of 9 large boxes and 7 small boxes has a total weight of 279 kilograms. How much does each type of box weigh? Weightofeachlargebox:kilogram(s) ____ Weightofeachsmallbox:kilogram(s)_____

A delivery of 3 large boxes and 5 small boxes has a total weight of 135 kilograms.
3l + 5s = 135A delivery of 9 large boxes and 7 small boxes has a total weight of 279 kilograms
9l + 7s = 279

Another of the same type of thing, two variables, two equations, enough info to suss out the details.  In this type of problem check the total against one of the factors to see if there’s an even division, that’s usually the avenue that leaves the prettiest whole numbers.  Here you could solve the first one for s, ending up with 135/5 and 3/5

3l + 5s = 135
5s = 135-3l
s=135/5-3/5l
s=27-0.6l

Sub that s into the other equation:

9l + 7s = 279
9l + 7(27-0.6l) = 279
9l + 189-4.2l = 279
4.8l+189=279
4.8l = 90
l = 18.75

Toss that into one of the equations and solve for exact s:
9l + 7s = 279
9(18.75) + 7s = 279
s=15.75

Hope it helps to learn it, you have many avenues to approach it, solving either equation for either variable to begin with.  If your numbers get ugly or you’re getting frustrated sometimes helps to start over, maybe start with the other equation or a different variable, maybe you’ll come across the method they designed the problem with that gives “pretty” numbers, but if you keep going even with irrational numbers like 8.6666666666666666666666, you’ll get the right answer no matter which place you start.

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## CAN YOU PLEASE HELP ME WITH THIS PROBLEM? This is due by MIDNIGHT 2). Manufacturer A produces hammers that are normally distributed with a mean weight of 4.6 lb and a standard deviation of 0.8 lb. Manufacturer B produces hammers that are normally distributed with a mean weight of 6.3 lb and a standard deviation of 1.4 lb. (a) What percentage of Manufacturer A’s hammers will weigh less than 5 lb? (b) What percentage of Manufacturer B’s hammers will weigh less than 5 lb? (c) Which manufacturer is more likely to produce a hammer weighing exactly 5.2 lb? Explain.

Part (a)
Manufacturer A;
Mean, μ = 4.6
Std. deviation, σ = 0.8

For the random variable x = 5, the z-score is
z = (x – μ)/σ = (5 – 4.6)/0.8 = 0.5
From standard tables,
P(x<5) = P(z<0.5) = 0.69 = 69%

69% will weigh less than 5 lb.

Part b)
Manufacturer B
μ = 6.3
σ = 1.4

For x = 5, z = (5 – 6.3)/1.4 = -0.9286
From standard tables,
P(x<5) = P(z<-0.9286) = 0.1766 = 17.7%

About 18% will weigh less than 5 lb.

Part (c)
x = 5.2 lb

Manufacturer A:
z = (5.2-4.6)/0.8 =  0.75
From tables,
P(x=5.2) = 0.773 = 77.3%

Manufacturer B:
z = (5.2-6.3)/1.4 = -0.7857
P(x=5.2) = 0.216 = 21.6%

Manufacturer A is more likely to produce a 5.2 lb hammer because its probability is higher.

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## How does chocolate consumption affect an individual’s weight? Which of the following options is a testable hypothesis for the experimental question?

The way that chocolate consumption affects an individual’s wieght is the calories, sugars, fat, carbs and sodium in the chocolate. The most that affect ones weight is the calories or sugars. A good hypothesis to use is “I hypothesis if an individual eats chocolate that has more than normal amounts of calories or more sugar than it will create more weight/fat on the individual”

Hope this Helps : )

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## The weight of 10 identical samples of a substance is 0.1 pound. What is the weight of 1000 samples

The weight of 10 identical samples of a substance is 0.1 pound. What is the weight of 1000 samples

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## Many experts believe that a person can take off weight more efficiently by reducing the amount of daily fat intake to under_____ percent of the total daily caloric intake.

Many experts believe that a person can take off weight more efficiently by reducing the amount of daily fat intake to under_____ percent of the total daily caloric intake.

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## What is an example of how you can be proactive about your personal health and wellness? Know your family health history and use reliable resources to research any family illnesses, because this will help you understand risks and available treatments Schedule regular doctor appointments, because getting checked by the doctor ensures that you will not get sick or contract communicable diseases Get extra sleep on days you don’t exercise, because this will help you keep your body composition in a healthy range and avoid changes in weight Use vitamins and performance-enhancing supplements, because they increase energy levels and help build muscles to keep your body physically fit Question 4(Multiple Choice Worth 1 points)

Your answer is: Know your family health history and use reliable resources to research any family.illnesses because this will help you understand risks and available treatments. By process of deduction, doctor’s appointments cannot perfectly ensure a lack of sickness, increasing sleep has studies that suggest it actually increases chances of weight gain, and performance-enhancing supplements are actually harmful if you don’t need them. Good Luck!

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## A group of repeated movements performed continuously with a given weight load is known as a:

A group of repeated movements performed continuously with a given weight load is known as a set. Sets and reps are the terms used to describe the number of times you perform an exercise. A rep is the number of times you perform a specific exercise and a set is the number of cycles of reps that you complete.

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## The weight of 10 identical samples of a substance is 0.1 pound. What is the weight of 100 samples?

The weight of 10 identical samples of a substance is 0.1 pound. What is the weight of 100 samples?

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## A digital scale reports a 10 kg weight as weighing 9.998 kg. Which of the following is true? A.the scale is both accurate and precise. B.the scale is accurate but not precise. C.the scale is precise but not accurate. D.the scale is neither precise nor accurate.

The basis to respond this question are:

1) Perpedicular lines form a 90° angle between them.

2) The product of the slopes of two any perpendicular lines is – 1.

So, from that basic knowledge you can analyze each option:

a.Lines s and t have slopes that are opposite reciprocals.

TRUE. Tha comes the number 2 basic condition for the perpendicular lines.

slope_1 * slope_2 = – 1 => slope_1 = – 1 / slope_2, which is what opposite reciprocals means.

b.Lines s and t have the same slope.

FALSE. We have already stated the the slopes are opposite reciprocals.

c.The product of the slopes of s and t is equal to -1

TRUE: that is one of the basic statements that you need to know and handle.

d.The lines have the same steepness.

FALSE: the slope is a measure of steepness, so they have different steepness.

e.The lines have different y intercepts.

FALSE: the y intercepts may be equal or different. For example y = x + 2 and y = -x + 2 are perpendicular and both have the same y intercept, 2.

f.The lines never intersect.

FALSE: perpendicular lines always intersept (in a 90° angle).

g.The intersection of s and t forms right angle.

TRUE: right angle = 90°.

h.If the slope of s is 6, the slope of t is -6

FALSE. – 6 is not the opposite reciprocal of 6. The opposite reciprocal of 6 is – 1/6.

So, the right choices are a, c and g.

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## Which statement holds true for a skewed histogram showing a distribution of the weights of students in a class? The number of weights on the right side of the mode is equal to the number of weights on the left. The number of weights on the left side of the mean is equal to the number of weights on the right. The mean weight and the median weight will be the same for the distribution. The nature of the skew can be verified by the position of the mean with respect to the median. The nature of the skew can be verified by the position of the mean with respect to the mode.

127=7 (mod n) means when 127 is divided by n, the division leaves a remainder of 7.

The statement is equivalent to
120=0 (mod n), meaning that n divides 120.

All divisors of 120 will satisfy the statement because 120 divided by a divisor (factor) will leave a remainder of 0.

Factors of 120 are:
n={1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120}, |n|=16.
You can count how many such values of n there are, and try to check that each one satisfies 127=7 mod n.

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## Related questions

### Which statement is the most important reason for warming up and cooling down? It reduces your risk of injury. It increases response time. It improves immune function. It stabilizes you emotionally. 1 points Question 2 Which term describes the promotion of health products, services, or practices of questionable safety, effectiveness, or validity for an intended purpose? quackery sham scam fishing 1 points Question 3 Which precaution should you take to protect yourself from the consequences of too much sun? Wear a hat, such as a baseball cap. Apply sunscreen only during the summer. Wear sunglasses that block at least 50 percent of the sun’s ultraviolet rays. Put on sunblock 30 minutes before going in the sun. 1 points Question 4 Which is the more questionable phrase when used in advertising? secret formula FDA-approved medically proven variation in efficacy 1 points Question 5 Which statement is true of cooling down after physical activity? A cool-down is a period of semistrenuous activity after physical activity. Cooling down increases blood flow to the muscles and decreases body temperature. Cooling down increases the lactic acid in your muscles, helping to protect them from injury. You should cool down for about 5 to 10 minutes after being physically active. 1 points Question 6 Which statement about dressing for physical activity is true? Clothes should be tight and lie flat against skin to prevent chafing. Rubberized or plastic clothing prevents you from sweating. In general, you should wear heavier weight clothing to keep muscles warm and flexible. You should wear a hat in cold weather and in sunny weather. 1 points Question 7 Which question is not relevant when evaluating advertisements? What is the product’s purpose? Who is the target audience? What is being advertised? How expensive is the product? 1 points Question 8 Which characteristics should you look for when choosing a shoe for physical activity? a sole that is exactly the same height at the heel and the toe a cushioned heel cup to protect the heel from impact a firm, molded inside to stabilize the foot a sole at least as wide as the upper part of the shoe 1 points Question 9 Which statement is true of electrolytes? The major electrolytes lost in sweat are hydrogen, potassium, and iron. Electrolytes help carry electrical impulses from one cell to another. Electrolyte replacement during physical activity is beneficial. Electrolyte concentrations decrease due to the loss of body water. 1 points Question 10 Which statement is true of warming up before physical activity? A warm-up is a period of semistrenuous activity that prepares the body for physical activity. A warm-up increases the amount of oxygen to your brain by raising your body temperature. You should warm up for about 15 to 20 minutes before being physically active. Stretching is important for flexibility and keeps your muscles from tightening up during physical activity.

The answer to the first question is It reduces your risk of injury
2. I don’t understand what this question is asking
3.
Put on sunblock 30 minutes before going in the sun.
4.
secret formula FDA-approved
5.
Cooling down increases the lactic acid in your muscles, helping to protect them from injury
6.
Clothes should be tight and lie flat against skin to prevent chafing.
7.
How expensive is the product?
8. I don’t know the answer to this problem
9.
Electrolytes help carry electrical impulses from one cell to another.
10.
Stretching is important for flexibility and keeps your muscles from tightening up during physical activity.

ANSWERED AT 22/10/2019 – 01:13 PM

QUESTION POSTED AT 22/10/2019 – 01:13 PM

### During weight training, when should you exhale?

You should inhale during the eccentric part, and exhale during the concentric part. Which basically means exhale during the hardest work and inhale when you’re back in your starting position.

ANSWERED AT 22/10/2019 – 10:07 AM

QUESTION POSTED AT 22/10/2019 – 10:07 AM

### You are asked to write an article for the school newspaper about fad diets. Which of the following paragraphs would be the most factual? A. Fad diets are extreme and do not include balanced meals. They are usually hard to maintain because of their extreme restrictions. Also, the weight one loses while on a fad diet is generally gained back as soon as a person stops dieting. B. Fad diets can be fun because they rarely restrict what you eat. Plus, they induce weight loss in healthy, maintainable ways, and involve techniques that can improve your flexibility. C. Fad diets, which are necessary for fast weight loss, include healthy, well-balance meals. Unfortunately, the weight you lose while on a fad diet is usually gained back once you stop dieting. D. Fad diets are an important part of a diet regimen. They can induce lifelong weight loss and weight gain, which makes them best for young people who want to lose weight quickly.

You are asked to write an article for the school newspaper about fad diets. Which of the following paragraphs would be the most factual? You should choose A for your answer. But I don’t really recommend this diet either because it doesn’t result in long-term weight loss, and it can be dangerous to your health. You are better off without it because even if you follow through with this diet you will not get the results you would like. I’m sure most people would want diets that have long-term results and not short-term results that can also be dangerous.

I hope this helps you! 😀

ANSWERED AT 22/10/2019 – 09:55 AM

QUESTION POSTED AT 22/10/2019 – 09:55 AM

### In order to prevent injury during your weight-training session, it is necessary to __________. A. do performance testing prior to setting up your workout routine, stretch before and after each workout, get the proper amount of rest and nutrition, and modify your workout as needed B. have your friend check your workout to be sure it is well-designed, exercise only three days a week, and allow for adequate rest between workouts C. never change your workout routine, stretch before and after each workout, allow time to warm up and cool down, and adjust your form as needed D. use slow bouncing movements to warm up and stretch before each workout, follow a plan that includes proper sets and repetitions, adjust your workout and form as needed, and workout every day

A. Do performance testing prior to setting up your workout routine, stretch before and after each workout, get the proper amount of rest and nutrition, and modify your workout as needed.

Wish you luck. Have a great day.

ANSWERED AT 22/10/2019 – 05:22 AM

QUESTION POSTED AT 22/10/2019 – 05:22 AM

### A group of repeated movements performed continuously with a given weight load is known as a:

A group of repeated movements performed continuously with a given weight load is known as a set. Sets and reps are the terms used to describe the number of times you perform an exercise. A rep is the number of times you perform a specific exercise and a set is the number of cycles of reps that you complete.

ANSWERED AT 22/10/2019 – 04:42 AM

QUESTION POSTED AT 22/10/2019 – 04:42 AM

### Which statement BEST describes a lifestyle with healthy eating habits? A. John and his family follow a diet plan that consists of healthy foods. If they begin to gain weight, they eat only protein until their weight drops to where they want it to be. B. Shannon and Shandra watch their weight carefully. They eat diets with no fat or sweets. Because of their plan, they stay very thin. C. Andrew is a wrestler and needs to stay at a consistent weight. In order to do so, he follows the dietary recommendations of a dietician carefully and always maintains a balanced diet. D. Maria and her brother Jose are obsessed with their appearance. In order to maintain a super-skinny look, Maria eats a low-calorie, no-fat, high-protein diet. In order to stay bulked up, Jose eats all protein and fats.

Basically, the rule is ALWAYS BALANCED.

A says only protein after gaining weight, wrong

B says refuse to eat fat and sweet, but proper fat is necessary for human

D says super-skinny, which is unhealthy

ANSWERED AT 22/10/2019 – 04:02 AM

QUESTION POSTED AT 22/10/2019 – 04:02 AM

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## The results of a study indicate that the mean weight of adult skunks in an area is between 4.3 kg and 4.9 kg. What is the study’s margin of error?

Remark: the fence is clearly 420 yards, not 420420.

check the picture

The 2 adjacent rectangles (corrals) form one larger rectangle.

as shown in the figure, let x be the length of the fences perpendicular to the river, then the length of the side opposite to the river will be 420- 2x (yard)

so we can write the following function, which calculates the area A enclosed by the fence, as a function of x.

A(x)=2x(420-2x)

clearly A is a quadratic function, its graph is a parabola. This parabola looks downwards because of the minus of the term -2x

from A(x)=2x(420-2x) we can find that the x intercepts of the parabola are:

one of the roots is x=0

and

420-2x=0,
2x=420
x=210 is the other root.

The x coordinate of the vertex is the midpoint of (0, 210), that is 210/2=105

f(105)=2*105(420-2*105)=210*(420-210=2110*210=44,100 square yard.

the highest point of the parabola is the largest value the function takes, so the maximal area of the fence.

Answer: max area= 44,100 square yard.

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## What is the weight of a 45 kg box?

What is the weight of a 45 kg box?

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## 14. I plan to lose some weight over the next three months by going to the gym three times a week and cutting back on my fast food intake. What is the problem with this goal? a.It does not state how much weight needs to be lost. b.This is an impossible goal. c.This goal is not time bound. d.Only females would state this goal.

A) Increase his activity and exercise levels and add more calories to gradually gain weight

B) Increase his activity and exercise levels and eat the same number of calories to gradually gain weight

C) Increase his snacks to two or three per day until he reaches his target weight

D) Increase his calories consumed and do less activity and exercise until he reaches his target weight

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## Select all that apply. Which of the following are means of measuring physical fitness? cardiorespiratory muscular endurance flexibility composition nutrition weight

Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. BMI test level is high from normal ranges shows that she is at higher risk of disease. She should lose weight and concern to the doctor.

Further Explanation:

Body mass index (BMI) is a measured value derived from the height of a person and mass.

BMI indicates whether the person is healthy or overweight mainly used by physicians.

• Range of BMI in a normal person is 18.5-25

• Range of BMI in skinfold person is 25-30

• Range of BMI in underweight person is 15-18.5

The skinfold measurement test is used to determine a person’s body fat percentage and body composition.

In this test, we are the proportion of body fat by determining skinfold thickness at pinches specific part of the body. The estimate of these folds is determined the fat beneath the skin, also called subcutaneous adipose tissue.

The tester pinches the skin at the site and drags the fold of skin away from the muscle so only the fat tissue and skin are being held. The skinfold thickness is measured by skinfold calipers in millimeters.

Skin test includes the seven locations of the body:

1. Triceps

3. Suprailiac

4. Pectoral

5. Subscapular

6. Midaxilla

7. Abdomen

Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. Females with waist size 47 inches have higher risk of having disease. BMI test level is high from normal ranges shows that she is at higher risk of disease.She should lose weight and concern to the doctor.

Subject: Health

Chapter: Physical Fitness

Keywords:

Body index mass, weight, doctor, triceps, abdomen, midaxilla, Quadriceps, skinfold, mass, height, pectoral.

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## Jacki, who has a sedentary lifestyle, is 5’5″ tall and weighs 165 lbs. she calculated her bmi to be 27.5. she recognizes that her body weight is unhealthy and vows to improve her eating habits and begin a regular program of physical fitness. her goal is to achieve a bmi of 22. approximately how much weight (lbs) must she lose

Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. BMI test level is high from normal ranges shows that she is at higher risk of disease. She should lose weight and concern to the doctor.

Further Explanation:

Body mass index (BMI) is a measured value derived from the height of a person and mass.

BMI indicates whether the person is healthy or overweight mainly used by physicians.

• Range of BMI in a normal person is 18.5-25

• Range of BMI in skinfold person is 25-30

• Range of BMI in underweight person is 15-18.5

The skinfold measurement test is used to determine a person’s body fat percentage and body composition.

In this test, we are the proportion of body fat by determining skinfold thickness at pinches specific part of the body. The estimate of these folds is determined the fat beneath the skin, also called subcutaneous adipose tissue.

The tester pinches the skin at the site and drags the fold of skin away from the muscle so only the fat tissue and skin are being held. The skinfold thickness is measured by skinfold calipers in millimeters.

Skin test includes the seven locations of the body:

1. Triceps

3. Suprailiac

4. Pectoral

5. Subscapular

6. Midaxilla

7. Abdomen

Charlie had a waist circumference of 47 inches and a BMI of 29 this shows that she is overweight. Females with waist size 47 inches have higher risk of having disease. BMI test level is high from normal ranges shows that she is at higher risk of disease.She should lose weight and concern to the doctor.

Subject: Health

Chapter: Physical Fitness

Keywords:

Body index mass, weight, doctor, triceps, abdomen, midaxilla, Quadriceps, skinfold, mass, height, pectoral.

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## Rex weighed 80 pounds a year ago. Now he weighs 92 pounds. What is the percent increase in his weight? (A)12% (B)13% (C)15% (D)16%

Rex weighed 80 pounds a year ago. Now he weighs 92 pounds. What is the percent increase in his weight? (A)12% (B)13% (C)15% (D)16%