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1 year ago

What kind of model is this?

Physics

2 answers:

Mariulka [41]1 year ago

6 0

Answer:

Explanation:

It is a physical model.

fredd [130]1 year ago

5 0

Answer:

I think it's Experimental

Explanation:

it has atoms on it.

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What are the SI units for acceleration? a. m/s b. m/s/s c. N d. kg

ozzi

M/s^2 is the correct answer

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3 years ago

When an apple falls towards the earth,the earth moves up to meet the apple. Is this true?If yes, why is the earth's motion not n

Harlamova29_29 [7]

Answer:

because the mass of the apple is very less compared to the mass of earth. Due to less mass the apple cannot produce noticable acceleration in the earth but the earth which has more mass produces noticable acceleration in the apple. thus we can see apple falling on towards the earth but we cannot see earth moving towards the apple.

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2 years ago

A hockey puck is traveling to the left with a velocity of v=10 when it is struck by the hockey stick

Lera25 [3.4K]

We have to calculate the impulse of a hockey puck.
Imp = m * ( v 1 - v 2 ) = m * Δ v
v 1 = - 10 i m/s,
v 2 = ( 20 * cos 40° ) i + ( 20 * sin 40° ) j =
= ( 20 * 0.766 ) i + ( 20 * 0.64278 ) j = ( 15.32 i + 12.855 j ) m/s
Δ v = ( 15.32 i + 12.855 j ) - ( - 10 i ) =
= 15.32 i + 12.855 j + 10 i = 25.32 i + 12.855 j
| Δv | = √ ( 25.32² + 12.855²) = √806.35 = 28.4 m/s
Imp = 0.2 kg * 28.4 m/s = 5.68 N-s
Answer: D ) 5.68 N-s.

4 0

2 years ago

A survey in a magazine that asks readers to return the survey would result in:

Angelina_Jolie [31]

D - Most likely. Those who read the magazine can choose whether or not to return the survey.

4 0

2 years ago

Liquid can flow but solid cannot give reason

Airida [17]

Answer:

well..

Explanation:

Liquid can flow but solid cannot because of differences in their properties

property of liquid which lets it flow:

inter-particular space is large
inter-particular attraction is small these properties tend to make the molecules of liquid free to flow

property of solid which tends to obstruct flow:

inter-particular space is small and so it's compact
inter-molecular attraction is strong hence no tendency to flow

Hope this helps!

6 0

2 years ago