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ioda
3 years ago
14

9. How much work is done when a 15kg box is lifted to a height of 2 meters?

Physics
1 answer:
torisob [31]3 years ago
5 0

Answer: W = 294 J

Explanation: Solution:

Work is expressed as the product of force and the distance of the object.

W = Fd        where F = mg

W= Fd

   = mg d

   = 15 kg ( 9.8 m/s²) ( 2m )

   = 294 J

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The tension in a string from which a 4.0 kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the
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Answer: 1

Explanation:

Given

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mass of object m=4\ kg

Tension is greater than the weight of the object i.e. elevator is moving upward

we can write

\Rightarrow T-mg=ma\\\Rightarrow T=m(g+a)\\\Rightarrow 44=4(10+a)\\\Rightarrow 11=10+a\\\Rightarrow a=1\ m/s^2

8 0
3 years ago
A girl delivering newspapers covers her route by traveling 3.00 blocks west, 4.00 blocks north, and then 6.00 blocks east. What
borishaifa [10]

Answer:

13 blocks

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3 0
3 years ago
Anna is conducting an experiment to determine how weather affects cell phone reception. She is trying to decide the best way to
Anestetic [448]
Your answer should be D.
Hope this helps :)
5 0
3 years ago
Some small hybrid cars and sports utility vehciles also have spoilers. What is the purpose? Is it the same or different from the
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I hope that answered your question.
7 0
3 years ago
Plzz answer this question ​
Vera_Pavlovna [14]
Mass does not change anywhere in the space .
So the given 30N is equal to the product of mass of the body and the acceleration due to gravity at that place in space.
After finding the mass of the body multiply it by the given acceleration due to gravity.
Mg is the approximate force due to gravity between the mass and the planet.

I hope this may help you.
6 0
4 years ago
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