The weight of an apple at 4r from earth is of that on earth

What is the relationship between Pangaea and the continental drift theory?

A heavy object falls with the acceleration as a light object during free fall. Why?

Can you differentiate between the wavelength of visible light and the wavelength of a moving soccer ball

A rotating merry-go-round and a rocket undergoing uniform acceleration both constitute their own inertial reference frame.

A 2.40 kgkg can of coffee moving at 1.50 m/sm/s in the + x+x-direction on a kitchen counter collides head-on with a 1.20 kgkg box of macaroni that is initially at rest. After the collision the can of coffee is moving at 0.

Who would use more energy in a day - someone who plays a lot of sport or someone who plays a lot of computer games

If you know the wavelength of any form of electromagnetic radiation, you can determine its frequency because?

What are the relationships of the different types of matter, mass, and the change in the average kinetic energy of particles?

A steamboat moves with velocity components of 6 km/hr along the x direction and 8 km/hr along the y direction. what is the direction of the steamboat with respect to the x axis?

What are 3 ways scientists can take to reduce bias?