2 years ago

A stone is thrown straight up. when it reaches it’s highest point, _____

Physics

1 answer:

Sati [7]2 years ago

8 0

both it velocity and acceleration is zero.

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What is the difference between velocity and speed??

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Velocity is a vector quantity i.e. it has both magnitude and direction
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Water displacement is used to find what? a. volume b. density

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Use the following photoelectric graph to answer the following question:

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2.9 E14 Hz

Explanation:

As we know by Einstein's equation that energy incident on the photo sensitive surface will be used by the surface to eject electron out of the surface with some kinetic energy.

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now the threshold frequency is the minimum frequency of the incident photons due to which electrons are ejected out with minimum kinetic energy or least kinetic energy.

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3 years ago

Why is it important for a muscle to be attached to a fixed origin at one end and a moving insertion at the other? Discuss how th

vlabodo [156]

Muscles function only by contracting. This makes it necessary for one end of the muscle to be fixed and the other mobile.
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Now, had the muscle not been fixed at one end, and contracted, it would pull both our shoulder and forearm together resulting in an ineffective movement. The desired motion is to lift the forearm (proximal and distal movement) which can only be achieved if the bicep is fixed at the shoulder and allowed to move at the forearm.

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