Find the gravitational potential energy of a 2kg ball that is 10m off the ground.

How to calculate the total current of a circuit which has both parallel and series connection

What is the force of gravity on an object known as?

A fisherman casts his bait toward the river at an angle of 25° above the horizontal. As the line unravels, he notices that the bait and hook reach a maximum height of 2.9 m.

You are holding a block of wood with dimensions 3 cm 6 cm 9 cm on the palm of your hand. Which side must be touching your hand for you to experience the greatest force?

A nucleus whose mass is 3.499612*10^ (-25) kg undergoes spontaneous alpha decay. The original nucleus disappears and there appear two new particles: a He-4 nucleus of mass 6.

Which visible (400 nm < λ < 700 nm) wavelength (s) will be absent in the reflected beam if the glass has an index of refraction n = 1.350?

Assume that a certain location on the Earth reflects 28.0% of the incident sunlight from its clouds and surface.

What is the snowboarder's kinetic energy when her speed is 5 m/s?

Select True or False for the following statements about electromagnetic waves. Ultraviolet radiation causes common sunburn. Visible light is often emitted when valence electrons change their state.

Why do atoms like carbon and nitrogen not like to make ions, while sodium and chlorine do?