1. The kinetic energy of a pendulum has the greatest value a. at the top of its
ID: 1779289 • Letter: 1
Question
1. The kinetic energy of a pendulum has the greatest value
a. at the top of its wing
b when its potential energy is greatest
c. at the bottom of its swing
d. when its total energy is greatest
e. at 2/3 heigh from the bottom
2. the age of the universe can be obtained by using:
a hubble law
b. gravitational red shift
c. dropler effect
d. fossil
e. age of the oldest rocks
3. orbital speed of the planets around the sun
a, increases when they are closer to the sun
b. increases when they get away from the sun
c. is always constant
Explanation / Answer
potential energy is maximum at extreme end and it converts to kinetic energy. the kinetic energy is maximum at bottom of swing.
hubbles law is used to measure the age of universe.
orbital speed increases when the planet gets closeer to sun because when the planet come closer to sun then centripetal force increases to counteract this centrifugal force to be increasing by increasing the speed.
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