A 50. g piece of clay moving at a speed of 25 m/s strikes a 750 g pendulum bob at rest. The length of a string is 1.2 m. After the collision the clay-bob system starts to oscillate as a simple pendulum. a. What is the speed of the clay-bob system after the collision?
b. What is the maximum angular displacement of the pendulum?
c. What is the period of the clay-bob oscillating system?
d. What is the total energy of the oscillating system?

The pendulum bob makes one complete oscillation and the string breaks at the lowest point.
e. What is the maximum horizontal distance of the bob when it strikes the floor 1.5 m below?

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide