While sleeping, a 15.5 kg dog exerts a downward force on the ground. What is the magnitude of the upward force being exerted on the dog by the ground?

Katniss, an alien from another planet, shoots an arrow straight into the air 2.4 meters from the ground at 36 meters per second. According to the laws of physics on her planet, the gravity is around 2.78 meters per second squared.

If a force of 20 N is applied to an object with a mass of 3 kg, the object will accelerate at m/s2

The first law of thermodynamics states that (triangle) E = Q-W. is this also a statement of the principle of conservation energy

The person in the middle weighs 500 n, and the tension on the rope is 400 n. what is the weight of the scaffolding?

If an atom of nitrogen binds wit three hydrogen atoms to form a molecule of ammonia, how many lone pairs of electrons does nitrogen have? A. One B. Three C. Four D. Five

Is light a wave like or a particle like or both and why is it so

If the height of a playground slide is kept constant, will the length of the slide or whether it has bumps make any difference in the final speed of children playing on it a. True. b. False.

A doppler effect occurs when a source of sound moves. True or False

What is a temporary magnet

A mouse is placed in a sealed chamber with air at 755.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 and H2O produced by the mouse. The gas volume in this chamber is measured to be exactly 2.