In the rotating Earth/Moon system, centrifugal force is equal to the gravitational force, but operates in the opposite direction. True or false?

A spherical weather balloon is filled with hydrogen until its radius is 4.00 m. Its total mass including the instruments it carries is 24.0 kg. (a) Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3.

As an auto mechanic, you need to determine the emf and internal resistance of an old battery. you perform these two measurements: (1) you apply a voltmeter to the battery/'s terminals and read 11.8 v.

Imagine 200kg a rocket being launched. While in the air, it is experiencing a 5,000N thrust force as well as a 1,000N drag force. What is the acceleration of the rocket?

Is it true or false that a group of animals limits the species of plants that grow in an area.

What is a mirage? explain the under which it is seen.

Both gravitational potential energy and kinetic energy depend on

How much work is done when a 105 g tomato is lifted 19.2 m?

Suppose a body has a mass of 60 kilograms and a velocity of 2 meters per second upward. What is the linear momentum?

Reflection and abssorption prevent some

Why is it important to change only one experimental variable at a time in an experiment?