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Ainat [17]
3 years ago
15

When a mass rests on a surface, the surface "pushes up" on the object with a force that is equal in

Physics
1 answer:
Airida [17]3 years ago
8 0

Answer: 294 N

Explanation:

Since the Normal Force N is equal to the weight W of the dog, we have:

N=W=m.g

Where:

m=30 kg is the mass of the dog

g=9.8 m/s^{2} is the acceleration due to gravity on the Earth's surface

Solving:

N=W=(30 kg)(9.8 m/s^{2})

N=294 N

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Answer:

It will travel 7,560 m

Explanation:

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5 0
3 years ago
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A child in a tree house uses a rope attached to a basket to lift a 24 N dog upward through a distance of 4.9 m into the house.
jenyasd209 [6]
<h3>Answer:</h3>

117.6 Joules

<h3>Explanation:</h3>

<u>We are given;</u>

  • Force of the dog is 24 N
  • Distance upward is 4.9 m

We are required to calculate the work done

  • Work done is the product of force and distance
  • That is; Work done = Force × distance
  • It is measured in Joules.

In this case;

Force applied is equivalent to the weight of the dog.

Work done = 24 N × 4.9 m

                  = 117.6 Joules

Hence, the work done in lifting the dog is 117.6 Joules

3 0
3 years ago
Political scientists use political models to describe which of the following? a. political spectrum b. political shift c. politi
aniked [119]

Answer:

D

Explanation:

Political scientists use political models to describe the political climate, which is an aggregate mood or opinion of a political society at a point in time.

8 0
3 years ago
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If a bean of mass 2.0g jumps 1.0cm from your hand into the air, how much potential energy has it gained in reaching its highest
kirill [66]
PE = mg\Delta h = 0.002 \, kg \cdot 9.8 \, m/s^2 \cdot 0.01 \, m = ~2 \cdot 10^{-4} \, J
6 0
3 years ago
Momentum is a vector quantity because it includes velocity, which is also a
zvonat [6]

Answer: A; True

Explanation: Momentum is known to be a vector quality, and thus has been proven by modern scientists and resulting in this answer being true.

Hope this helps <3

Stay safe, stay warm

-Carrie

Ps. it would mean a lot if you marked brainliest (=

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3 years ago
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