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LiRa [457]
2 years ago
5

A sledgehammer hits a wall How do the hammer and the wall act on each other?

Physics
1 answer:
tigry1 [53]2 years ago
7 0

We want to study the impact of a sledgehammer and a wall.

Before the sledgehammer hits the wall, it has a given velocity and a given mass, so it has momentum and it has kinetic energy.

When it hits the wall, the velocity of the hammer disappears, this means that the energy is transferred to the wall, this "transfer of energy" can be thought of a force applied for a really short time on the wall, which for the third law of Newton, the force is also applied on the hammer.

This is why you feel the impact on the handle when you hit something with a hammer, this also means that some of the energy is dissipated on your arms.

Now, because the wall is made of a material usually not as strong as the head of the sledgehammer, we will see that in this interaction the wall seems more affected than the hammer, but the forces that each one experiences are exactly equal in magnitude.

If you want to learn more, you can read:

brainly.com/question/13952508

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______ is the most abundant gas in Earth’s atmosphere.
algol13

Answer:

<em>Nitrogen</em>

Explanation:

<u>Composition of the Atmosphere</u>

The atmosphere contains several gases, most of them in small amounts, which may include some pollutants and greenhouse gases.

The most abundant gas in the atmosphere is nitrogen (78%), followed by oxygen (21%) as the second. The inert gas called Argon is the third most abundant gas in the atmosphere (less than 1%).

Finally, the fourth most abundant gas in Earth's atmosphere is Carbon dioxide

4 0
2 years ago
a car with a mass of 1200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. the centrip
qaws [65]
Well, first of all, a car moving around a circular curve is not moving
with uniform velocity.  The direction of motion is part of velocity, and
the direction is constantly changing on a curve.

The centripetal force that keeps an object moving in a circle is

         Force  =  (mass of the object) · (speed)² / (radius of the circle)

         F  =  m s² / r

We want to know the radius, to rearrange the formula to give us
the radius as a function of everything else.

                                          F     =  m s² / r

Multiply each side by 'r':       F· r  =  m · s²

Divide each side by 'F':            r  =  m · s² / F    

We know all the numbers on the right side,
so we can pluggum in:

                      r  =       m       ·        s²      /     F

                      r  =  (1200 kg) · (20 m/s)² / (6000 N) .

I'm pretty sure you can finish it up from here.

                                      


5 0
3 years ago
An old clock has a spring that must be wound to make the clock hands move. Which statement describes the energy of the spring an
kondaur [170]

Answer:

D

Explanation:

When the spring is wound, then it gathers potential energy in the form of tension energy. As it slowly unwinds, the potential energy is converted to kinetic energy of the hands' movements of the clock. This energy is channeled through the use of cogs/gears in the clock.

7 0
2 years ago
Read 2 more answers
Which of the following is a characteristic of digital data?
Westkost [7]

Answer:

duplication being slightly more expensive.

Explanation:

3 0
2 years ago
Boyles law<br> squeezing a balloon is one way to burst it. Why? ...?
KiRa [710]
According to Boyle's Law,  volume is inversely proportional to pressure. It means if the volume of a gas goes up the pressure goes down and if the volume of the gas goes up the pressure goes down. When the pressure of air inside the inflated balloon is more than the atmospheric pressure outside the balloon. And also when the density inside is greater than the density outside. The molecules inside the balloon move and bang around the inner walls which produces force, which provides the pressure of an enclosed air.
6 0
3 years ago
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