Why is the sky blue scientifically?

A water tank has a mass of 3.6 kg when it is empty. The same tank has a mass of 51.5 kg when it is full of water. What is the mass of the water when the tank is full?

You ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale. the reading on the scale is you ride on an elevator that is moving with constant upward acceleration while standing on a bathroom scale.

Why does it take a longer distance to stop a ping pong ball than a bowling ball with the same momentum?

Detail some of the anthropogenic changes to Earth's climate and their potential impact on life.

An 80 kilogram rock at the edge of a 10 meter cliff has what potential energy of joules?

What is the simple average of these two velocities (0m/s, 0.4m/s)

What form of electromagnetic radiation does a radio and microwave use?

does increasing the frequency of a wave also increase its wavelength if not how are these quantities related

Truck A has a mass of 5000 kg and a velocity of + 5m/s. Explain why we say truck B has a velocity of - 5m/s.

A force of 185 n is needed to keep a small boat moving at 2.39 m/s. what is the power required to keep the boat moving at the steady speed?