PHYSICS HIGH SCHOOL

Forces contribute to the net force on a car rolling down a ramp. a. Which force supports the car’s weight?
b. Which force accelerates the car down the ramp?
c. Which force acts against the motion of the car?

Answers

Answer 1
Answer: B)Gravity pulls the car downward, also its the only force in the downward direction.
 C)Force that acts against is friction.

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How is 1 hectoliter different from 1 kiloliter?

Answers

For this case the main unit is liter.

The first thing you should know is that the liter is a unit of volume.

The difference then between hectoliter and kiloliter is the conversion factor.

For hectoliter we have:

1 hectoliter = 100 liters

For kiloliter we have:

1 kiloliter = 1000 liters

Answer:

The difference between both is the conversion factor:

1 hectoliter = 100 liters

1 kiloliter = 1000 liters
a kiloliter is smaller than hectoliter

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill? @4.3.8.A @2A)
Kinetic energy decreases and potential energy increases.


B)
Kinetic energy increases and potential energy decreases.


C)
Both potential and kinetic energy decrease.


D)
Both potential and kinetic energy increase

Answers

Answer is B)
When a child is riding on a sled down a steep, snow-covered hill, his elevation decreases and hence Kinetic energy increases and potential energy decreases.

Hope it helps!

Which of the following describes when light bounces off a surface

Answers

This is the process of light bouncing off a surface reflection. 

Answer:

Its reflection

Explanation:

Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection. ... Diffuse reflection is when light hits an object and reflects in lots of different directions. Welcome.

Which of the following is a region where magnetic force will affect other magnets?A-electronic domain
B- magnetic generator
C- magnetic field
D- magnetic charge

Answers

it is c.......ik bc i just got it right on platoweb

In Act III, Scene 1, who hears these words from Titania?Thou art as wise as thou art beautiful.
A. Puck
B. Oberon
C. Bottom
D. Peaseblossom

Answers

C. Bottom

Titania speaks these words as she is under the enchantment of the magic flower, it makes her fall in love with the first thing she sees. It's comedic because Bottom is also enchanted to have the head of a donkey, so she's claiming that this peasant with a donkey head is both wise and beautiful. The reality being that he is as wise as he is beautiful, in that he is neither beautiful nor wise.

One particular confound for the use of an adoption study of heritability is the phenomenon of _____ placement, in which a child is placed in a home that is similar to the home of the biological parents.A) unilateral
B) forced
C) matched
D) selective

Answers

Answer:

D) selective

Explanation:

The selective placement in the adoption studies refers to practice by which the adoption agencies tend to match some definite characteristics of the adopted child's adopted parents than that of child's biological parents.

It results in the correlation of the environments between the biological relatives raised in two different homes.

For example, when the child is placed in a home which is similar to the home of the biological parents.
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