PHYSICS HIGH SCHOOL

If you lift a 16 kg child from the floor to her bed, which is 1 meter high, how much have you increased her potential energy.

Answers

Answer 1
Answer: GPE=mgh
GPE=16•9.8•1

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Energy is measured in units calleda. joules.
b. pounds.
c. meters.
d. horsepower.

Answers

Energy is measured in units called joules.

answer: a. joules.

'When we see something that exists in real life, there are many different ways to display imagery and importance using art. What the artist _____________ depends on what he/she wants to communicate.'

Answers

Answer:

Emphasizes

Explanation:

The expression of an art is intelligible to those that understand it, as such to make an impression an artist has to emphasize the point they want to communicate

An art is an expression of the personal experiences of the artist or a reaction to events or to reveal the realities as seen by the artist such as global warming and the environment, so as to get the attention of people with the goal to change them, such that a good art changes the most people, hence the need for emphasis.

Answer:

A - emphasizes

Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 ft = 0.30 m, and use g = 9.8 m/s2.)

Answers

Since the ball is free-falling, you use this equation:
v^2 = 2gh
where v is the velocity
g is the acceleration due to gravity
h is the height at which the object is dropped from

Plugging in the values and converting ft to m,
v^2 = 2 (9.8) (12) (0.3)
v = 8.4 m/s

8.4 m/s have a nice day

A boy kicks a ball with a mass of 5 kg so that it accelerates at 4 m/s2 in the forward direction. A 40 N
B 0 N
C 20 N backward
D 20 N forward

Answers

I think it should be D

2 What does how much, how
long and how
often have to do with exposure to chemicals?

Answers

Well how much, how long, and how often  

For example how much is like how much a object is left in a small room with chemicals

How long is the time

how often is how much the same cycle is done repeatedly

If two runners take the same amount of time to run a mile, they have the same __________.A.
acceleration
B.
force
C.
mass
D.
velocity

Answers


They  have the same average speed over a mile.

If both of their miles are in straight lines, and in the same directions, and they
both take the same time, then their average velocities are also the same.

its d. velocity i just took the test on edge
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