A child does 350J of work while pulling a box from the ground up to his tree house with a rope. The tree house is 5.2 m above the ground. What is the mass of the box? A) 4.1 kg B) 6.9 kg C) 6.2 kg D) 5.2 kg

A 2.40 kg can of coffee moving at 1.50 m/s in the + x-direction on a kitchen counter collides head-on with a 1.20 kg box of macaroni that is initially at rest. After the collision the can of coffee is moving at 0.825 m/s in the + x-direction.

Name two elements that have similar properties. How can you tell using the periodic table?

Which is the best procedure to make a permanent magnet? A. placing a magnetically hard material in a weak magnetic fieldB. B. placing a magnetically hard material in a strong magnetic field C.

Which of the following is an example of applied research?

Each of the planets also spins about an axis running through it. True or False

A sample has a density of 30 g/ml. there is 60 ml of this substance. how much does it weigh?

Forgetting takes place only in short-term memory.

What is the simplest relationship between the angular wavenumber k and just one of the other kinematic variables? Express your answer using only one of the other kinematic variables plus constants like π.

The pilot of an airplane notes that the compass indicates heading west. The airplane's speed relative to the air is 100 km/h. The air is moving in a wind at 25.0 km/h toward the north.

How do you get a resultant factor? A. Add two or more vectors B. Add two scalars C. Multiply two scalars D. Multiply two vectors