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Amiraneli [1.4K]
3 years ago
10

A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it contain?

Physics
1 answer:
kifflom [539]3 years ago
5 0

Answer:

9806.65 Joules

Explanation:

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A 2000 kg test car travels around a circular track with a radius of 100 m. If the
Anarel [89]

Answer:

V=0.38 m/s

Explanation:

ac=3 m/s^2

m=2000kg

r=100m

ac=mv^2/r

Solve for v^2

3=2000(v^2)/100

3=20v^2

3/20=.15

sqrt of .15= 0.38 m/s

V=0.38 m/s

6 0
3 years ago
An athlete wants to refill an old punching bag used for training, as shown in the picture. When refilled, the bag will rip if it
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The maximum force that the athlete exerts on the bag is NEGATIVE 1,500 N and in the OPPOSITE DIRECTION of the force that the bag exerts on the athlete.

<h3>Newton's third law of motion</h3>

Newton's third law of motion states action and reaction are equal and opposite. That is the force applied to an object is equal in magnitude to force experienced by the object but in opposite direction.

From the given question, when the bag exert a certain on the athlete, the athlete also exerts similar force to the bag but in opposite direction.

Thus, the complete sentence is as follows;

The maximum force that the athlete exerts on the bag is NEGATIVE 1,500 N and in the OPPOSITE DIRECTION of the force that the bag exerts on the athlete.

Learn more about Newton's third law of motion here: brainly.com/question/25998091

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5 0
2 years ago
How many aluminum atoms are in the following compound?<br> 4 Al(OH)3
vovikov84 [41]

Answer:

There are 4 Aluminum atoms in 4Al(OH)3.

3 0
3 years ago
Which method is responsible for the transfer of heat in the atmosphere ?
k0ka [10]

Answer:

B

Explanation: Because conduction is when an object touches another object and convection happens with boiling water or the water cycle, the particles/water fall and rise.

4 0
3 years ago
Why does a pendulum have periodic motion?
Igoryamba
A, B, and C are all incorrect because they are talking about springs. I'm assuming you're talking about a 2 dimensional, side to side pendulum. In that case, the answer is D because as the pendulum goes up from one side, gravity accelerates it downward until it swings to the other side. If you're not talking about this type of pendulum, leave a comment and ill come back.
7 0
3 years ago
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