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4 years ago

Why is it harder to hear someone through a wall?

Physics

1 answer:

olchik [2.2K]4 years ago

4 0

Answer:

Because the soundwave bounces back when it hits the wall. Only a fraction of the soundwave gets transferred through the wall.

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Why does a third class lever cannot magnify force?

maw [93]

Explanation:

The third class lever cannot magnify our force because in third class lever the effort it between the load and the fulcrum. Also, in this type of lever no matter where the force is applied, it is always greater than the force of load. Hence, That type of lever cannot magnify our force.

5 0

3 years ago

24. An elevator is moving vertically up with an acceleration a. The force exerted on the floor by a passenger of mass m is

Wewaii [24]

Given :-

An elevator is moving vertically up with an acceleration a.

To Find :-

The force exerted on the floor by a passenger of mass m .

Solution :-

As the man is in a accelerated frame that is non inertial frame , we would have to think of a pseudo force .

The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .

For the FBD refer to the attachment . From that ,

$\implies Weight_{apparent}= mg + ma$

Hence option d is correct choice .

I hope this helps .

3 0

3 years ago

The three mountains task examines the development of

GalinKa [24]

Answer:

The Three Mountain Task was developed by Jean Piaget and Bärbel Inhelder in the 1940s to study children's ability to coordinate spatial perspectives. In the task, a child faced a display of three model mountains while a researcher placed a doll at different viewpoints of the display.

Explanation:

6 0

3 years ago

Why would a soccer ball keep going forever without physics? Pls help and explain why

Pani-rosa [81]

A soccer ball would keep moving forever without physics, because without force to act upon the soccer ball, it could, or will not be able to stop the acceleration. And force is a factor in physics.

7 0

4 years ago

Read 2 more answers

Which statement best explains the importance of resource economics?

aleksley [76]

Answer:

it sets consistent prices to achieve sustainability

7 0

2 years ago