Does a light year measure time brightness or distance

Does a North magnet and south magnet repel or attract?

Which is the least accurate description of molecules? A. They are pure substances. B. They are linked together by transferred electrons. C. They are what make up some elements and compounds. D.

Calculate the index of refraction for a medium in which the speed of light is 2.290 x 10^8 m/s?

What was the solar system like when the moon formed?

What is the power output of a pump which can raise 60 kg of water to a height of 10m every minute

How Much Potential Energy Does A 50kg block of Ice a Height of 4m Have?

In a summer storm the wind is blowing with a velocity of 8m/s north. Suddenly in 3 seconds, the winds velocity is 23m/s north. What is the winds acceleration?

How does a bicycle rider's energy of motion changes as the gain speed while riding down a hill? Options: A) It is lost. B) It increases. C) It remains the same. D) It is stored in the bicycle rider.

When is a sailboat the stand on vessel in relations to a recreational power boat?

What happens when a balloon is rubbed with a woollen cloth?