What is a normal force?

A woman who has a mass 50kg is wearing high heel shoes. The area of each heel in contact with the floor is 0.45 cm 2. What is the pressure exerted by the woman on the floor if A. she stands on the 2 heels. B. she stands on 1 heel only.

Fiberglass, an insulator, can be found in the wals and roofs of some houses and buildings. Why would an insulator be needed inside of buildings in the winter? It makes the building look pretty B) It keeps the heat inside of the building.

How to convert 125 cubic centimeters to cubic miles

A 2.80 kg mass is dropped from a height of 4.50 m. Find its kinetic energy (KE) when it reaches the ground. Unit = J

If your heart is beating at 76 beats per minute what is the frequency of your heart's oscillations

Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill. The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made.

What is the proper name for this molecule CO2

Two movers use a rope system to lift a box to a third-story apartment. They do 1,200 J of work on the rope system, and the rope system does 1,020 J of work on the box. What is the efficiency

Refrigerated air reads 68°f and appears to be climbing: food is at 41°f. what should you do

A device called a flip coil can be used to measure the earth's magnetic field. The coil has 180 turns and an area of 1.5*10-2 m2.