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natulia [17]
3 years ago
9

Carmen is helping load furniture and boxes onto a moving truck. She picks up boxes of her things, places them on a cart, and pus

hes the cart to the moving van. Which term best describes the type of force Carmen is using? * contact speed gravity noncontact
Physics
1 answer:
Sidana [21]3 years ago
4 0

Answer:

contact

Explanation:

A contact force is defined as a force which requires some contact to occur. When we apply force that is in contact with the objects are called as contact forces.

In the context, Carmen is loading furniture and boxes on a moving van by picking up by picking up the boxes or furniture on a cart and pushing it onto the van. Carmen uses contact forces to lift the boxes and furniture onto the van.

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Question 5 of 20 A person throws a 0.12-kg ball straight up into the air. It reaches a height of 15 m. What is the force on the
leonid [27]

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3 years ago
Serena drops a 5-kg book down the stairwell. What is the book's final velocity vf after it falls
elena55 [62]

Answer:

39.2m/s

Explanation:

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Mass of book  = 5kg

Time taken for fall  = 4s

Unknown:

Final velocity of the book  = ?

Solution:

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 Let us find the appropriate motion equation to solve this problem;

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t is the time taken

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3 0
3 years ago
A gas undergoes two processes. In the first, the volume remains constant at 0.170 m3 and the pressure increases from 1.50×105 Pa
Mnenie [13.5K]

Answer:

W_{T} = - 24 kJ

Explanation:

The work (W) done by the gas can be calculated using the following equation:

W = p*\Delta V = p*(V_{f} - V_{i})

<u>Where:</u>

p: is the pressure

[tex}V_{f}[/tex]: is the final volume

[tex}V_{i}[/tex]: is the initial volume

In the first process, the work done by the gas is:

W_{1} = p*\Delta V = p*0 = 0

Since the volume remains constant, the total work done by the gas is equal to zero.

In the second process, the work done by the gas is:

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Now, the total work done by the gas during both processes is:

W_{T} = W_{1} + W_{2} = 0 + (-24 kJ) = - 24 kJ

Therefore, the total work done by the gas during both processes is - 24 kJ.

I hope it helps you!

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4 years ago
True/False
Travka [436]

Answer:

True

Explanation:

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