I need this type out answer question.

The ball has 7.35 joules of energy at position B.

The velocity of the ball at position A is 3.13 meter/second

Explanation:

Kinetic and Gravitational Potential Energy

Kinetic energy is the form of energy that an object or a particle has by reason of its motion. An object of mass m and speed v has kinetic energy calculated by:

Gravitational Potential Energy is the form of energy that an object has by reason of its height h relative to a certain reference. It can be calculated as follows:

Where g is the acceleration of gravity.

The figure shows a pendulum with a bob (ball) of mass m=1.5 Kg. When it's pulled to point B, it has a height of h= 0.5 m and set to rest.

The potential energy at that point is:

The ball has 7.35 joules of energy at position B.

When the ball is released, all of the potential energy is transformed into kinetic energy when reaches point A. Thus:

K=7.35 J

From the equation of kinetic energy, we solve for v:

v = 3.13 m/s

The velocity of the ball at position A is 3.13 meter/second

i think it is non rem sleep

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.