PHYSICS HIGH SCHOOL

Based on its type of chemical bond, which of the following has the highest boiling point? potassium chloride

ethyl alcohol

water

ammonia

Answers

Answer 1
Answer:

Answer;

Potassium chloride

Explanation;

  • Potassium Chloride is an ionic compound and has ionic bond which is stronger than covalent bond in ethyl alcohol,water ,ammonia, and thus has the highest boiling point .
  • ionic bond is a type of bond that results from the transfer of electrons between metallic atoms and non-metallic atoms.

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Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.Which best explains why Denise had fewer injuries to the area of her body that hit the grass? The grass did not exert a reaction force.
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Answers

Answer : Because the grass extends the time of the collision.

Explanation :

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

He had fewer injuries to the area of her body that hit the grass because the grass extends the time of the collision and hence it imparts less impulse.

i.e. I=(F)/(t)

Where

F is the force

t is the time of collision

Hence, the correct option is (d) " The grass extends the time of the collision ".
The grass extends the time of the collision

What kind of energy does a rubber band have when it is stretched? A.
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B.
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C.
kinetic energy

D.
chemical energy

Answers

the answer is obviously a because a rubber band uses elastic energy

Answer:

The answer is A.

Explanation:

It's correct in Аpex

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converges light
bulges in the middle
diverges light
is thinner in the middle

Answers

Answer:

Options C and the D are the correct answer.

Explanation:

There are two types of lenses: concave lenses and convex lenses. A convex lens is thinner in the middle. On the other hand, convex lenses are also called diverging lens because after the light passes through it, the ray light spreads out. Due to this, diverges light and is thinner in the middle are the correct answer.
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Answers

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1. Calculate the resistance of a 12v, 20-amp circuit.

Answers

Answer:

R = 0.6 ohms

Explanation:

We have,

Voltage of the circuit is 12 V

Current flowing in the circuit is 20 A

It is required to find the resistance of the circuit. Ohm'slaw gives the relationship between voltage, current and resistance. It is given by :

V=IR

R = resistance

R=(V)/(I)\n\nR=(12)/(20)\n\nR=0.6\ \Omega

so, the resistance of the circuit is 0.6 ohms.

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b. False

Answers

Correct answer choice is :


A) True


Explanation:


Lipoproteins are essentially a hub full of fat and cholesterol, along with a lipid layer that includes proteins named apolipoproteins. There are many kinds of lipoproteins, but the two most prominent ones are called Low-Density Lipoprotein and HDL.LDL particles are seldom related to as bad lipoprotein because of concentrations, dose-related, associated with atherosclerosis change. High-density lipoproteins (HDL) get fat molecules from the body's cells and take it back to the liver.
The correct answer for the question that is being presented above is this one: "TRUE." A diet rich in high-density lipoproteins (HDLs) can help cleanse and open arteries that are clogged with plaque. The statement that is presented is True.
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