Sound is ...

A. matter

B. Vibration

C. potential energy

D. electromagnetic energy

The 8 mm diameter bolt is made of an aluminum alloy. It fits through a magnesium sleeve that has an inner diameter of 20 mm.

What is the main function of the lymphatic system

Why should galaxy collisions have been more common in the past than they are today?

Which uses more electricity a 1700 w hair dryer or a 1200 w microwave: both running for 5 minutes?

Two charges are separated by a distance 'd' and exert a mutual attractive force of 'f' on each other. if the distance is decreased to 1/3 of the original distance, what is the new force between the charges?

How many protons are in the radioactive isotope 40/19K?

What are some examples of constructive interference and the Doppler Effect in real life

A football is kicked at an 50 degree angle to the horizontal, travels a horizontal distance of 20m before hitting the ground. what is the initial speed?

What happens when you rub an ebonite stick with a wool cloth?

What is ferromagnetism?