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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)

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Answered by answersmine AT 22/10/2019 – 04:31 AM

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 scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water 50 g of sand Question 2(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid. Question 3(Multiple Choice Worth 2 points) Which of these best explains what happens when the ionic substance calcium chloride (CaCl2) dissolves in water? The oxygen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the Cl− ions. The hydrogen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the H+ ions. Question 4(Multiple Choice Worth 2 points) Which of these statements about water is true? Its atoms share electrons equally. It can dissolve all known substances. Its molecules are farther apart in the solid state than in the liquid state. It has a lower specific heat than nearly all known metals.

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The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies. 

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface. 

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h. 

So the time for the pencil and eraser to touch is T=1.3449 hours. 

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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Areas near oceans or large lakes tend to have more moderate climates than do areas far from large bodies of water. Which of these statements best explains this observation? Hydrogen and oxygen atoms share electrons in a water molecule. Lakes and oceans contain dissolved solids. Water has a very high specific heat. Water produces buoyant forces. Question 2(Multiple Choice Worth 2 points) A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance? It expands when it freezes. It is highly colored. It exists only as a gas. It does not dissolve ionic compounds. Question 3(Multiple Choice Worth 2 points) Which of the following properties of water is due primarily to the uneven distribution of charge between the hydrogen and oxygen atoms? its color its taste its ability to dissolve ionic substances its ability to produce buoyant forces Question 4(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

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The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies. 

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface. 

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h. 

So the time for the pencil and eraser to touch is T=1.3449 hours. 

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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Question 4(Multiple Choice Worth 2 points) Choose the right description for the following person, be careful with the adjective agreement: Your grandfather Il est polis. Il est jolie. Il est timide. Il est supers. Question 5(Multiple Choice Worth 2 points) Choose the right description for the following people, be careful with the adjective agreement: Your parents Ils sont pauvre. Ils sont drôle. Ils sont snobs. Ils sont sévères.

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Les jeux vidéos peuvent-ils nuire à la santé? Si oui, comment?”
Oui, les jeux vidéos peuvent nuire à la santé.

Sur le plan physique :

ils épuisent le cerveau, ils altèrent son fonctionnement,
– trop d’heures passées sur l’écran abiment les yeux (la vue),
– Les jeux vidéos favorisent également l’obésité car les joueurs refusent
souvent de pratiquer d’autres activités,
– manque de sommeil,
-grignotage

Conséquences sur la santé psychologique :
– perte de l’estime de soi (les grands joueurs aiment gagner, en cas d’échec ils se remettent en question),
– les joueurs se coupent du monde, s’isolent pour se consacrer qu’aux jeux vidéo et deviennent accros,
– les joueurs négligent leur entourage

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Question 2(Multiple Choice Worth 1 points) (04.00 MC) If you spent a week in a French town, where would you observe most French families going at least one morning during the week? the spa the market the flea market the park Question 3(Multiple Choice Worth 1 points) (04.00 MC) What is the major difference between the French and Americans regarding food shopping? The French buy meat and deli products. go shopping at a supermarket. buy vegetables often. buy food at specialized stores daily. Question 4(Multiple Choice Worth 1 points) (04.02 MC) Fill in blank with the correct form of the verb aller. La fille __________ au magasin. vais vas vont va

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Question 13 (Fill-In-The-Blank Worth 1 points)

Fill in the blank with the correct form of the verb être: You may copy
and paste the accented characters from this list if needed: Àà Ââ Ää Çç
Éé Èè Êê Ëë Îî Ïï Ôô Œœ Ùù Ûû Üü

Tu es mon amie.

Question 14 (Fill-In-The-Blank Worth 1 points)

Fill in the blank with the correct form of the verb être: You may copy
and paste the accented characters from this list if needed: Àà Ââ Ää Çç
Éé Èè Êê Ëë Îî Ïï Ôô Œœ Ùù Ûû Üü

On est au restaurant.

Question 15 (Fill-In-The-Blank Worth 1 points)

Fill in the blank with the correct form of the verb être: You may copy
and paste the accented characters from this list if needed: Àà Ââ Ää Çç
Éé Èè Êê Ëë Îî Ïï Ôô Œœ Ùù Ûû Üü

Ma maman et moi (My mother and I) sommes de Paris.

Conjugaison du verbe “être” au présent :

Je suis
Tu es
Il,elle,on est
Nous sommes
Vous êtes
Ils,elles sont

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Question 4(Multiple Choice Worth 3 points) Which polynomial expression represents the area of the outermost square tile, shown below? x2 + 6x − 6 x2 − 9x + 6 x2 + 6x − 9 x2 − 6x + 9

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Answer:

C. Yes, because the population values appear to be normally distributed.

Step-by-step explanation:

Given is a graph which shows the distribution of values of a population

The graph has the following characteristics

i) Bell shaped

ii) symmerical about mid vertical line

iii) Unimodal with mode = median =mean

iv) As x deviates more from the mean probability is decreasing and also curve approaches asymptotically the x axis

Hence we find that the curve is a distribution of normal

Option C is right

C. Yes, because the population values appear to be normally distributed.

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