"Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?"

T

Explanation:

The pendulum of a simple pendulum is given by

where T is the period, l is the length of the pendulum and g is the acceleration due to gravity.

It is seen that this equation does not involve the mass or weight of the pendulum. Thus, the two pendulums will have the same period as long as they are of the same length.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

c. magnitude and direction