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ANEK [815]
3 years ago
7

How much work does an athlete do if she raises a 5N kettle bell 2 m off the ground?

Physics
1 answer:
Degger [83]3 years ago
6 0

Answer:

<h2>The answer is 10 N</h2>

Explanation:

To find the work done by an object given the distance covered by the object and it's force we use the formula

<h3>work done = force × distance</h3>

From the question

force = 5 N

distance = 2 m

We have

work done = 5 × 2

We have the final answer as

<h3>10 N</h3>

Hope this helps you

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You haven't stated any numbers showing that the intensity of solar radiation at the surface is lower than at the top of the atmosphere. Your data only show that the value at the top of the atmosphere is different on different dates.

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8 0
3 years ago
Estimate the number of Ping-Pong balls that can be packed into an average size room (without crushing them). Given that Ping-Pon
scoray [572]

Answer: 3,893,845.918 Ping-Pong balls

Explanation:

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V_{room}=(length)(width)(height) (1)

V_{room}=(12 ft)(18 ft)(9 ft)=1944 ft^{3} (2)

Now let’s transform this V_{room} to units of cm^{3}, knowing 1 ft=30.48 cm:

V_{room}=1944 ft^{3}\frac{{(30.48 cm)}^{3}}{1ft^{3}}=55,047,949.78 cm^{3} (3)

On the other hand, we have Ping-Pong balls with a radius r=1.5 cm, and their volume is given by:

V_{balls}=\frac{4}{3} \pi r^{3} (4)

V_{balls}=\frac{4}{3} \pi (1.5 cm)^{3} (5)

V_{balls}=14.137 cm^{3} (6)

Now, the number n of Ping-Pong balls that can be packed into the room is:

n=\frac{V_{room}}{V_{balls}} (7)

n=\frac{55,047,949.78 cm^{3}}{14.137 cm^{3}}  (8)

n=3,893,845.918 This is the number of Ping-Pong balls that can be packed into an average size room

7 0
3 years ago
Find the base area of a cylinder with diameter 1m​
jek_recluse [69]

Answer:

AB=0.79

Explanation:

hope this helped

8 0
3 years ago
What are fossil fuels
kherson [118]
A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
5 0
3 years ago
Read 2 more answers
The electric field in a certain region of Earth’s atmo- sphere is directed vertically down. At an altitude of 300 m the field ha
I am Lyosha [343]

Answer:

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Explanation:

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4 years ago
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