If the mass of the helicopter is 4500kg, and the net force on it is 18,000 N, what is the helicopter's acceleration?

The acceleration of an object is proportional to which of the following

Mr. Mann's science students were experimenting with speed. They set up a 1 meter (100 cm) track. The students used balls instead of cars. The balls were different sizes and made of different materials.

A frictionless pendulum of length of 3 m swings with an amplitude of 10o. At its maximum displacement, the potential energy of the pendulum is 10 J. What is the kinetic energy of the pendulum when its potential energy is 5 J? a. 5 J b. 10 J c.

Heating food undera heat lamp is an example of heat transfer by

An atom of calcium-48 and an atom of calcium-47 differ in A) atomic number. B) nuclear charge. C) number of neutrons. D) number of electron

Rachel is making cookies. She pours 1/2 cup of oil into a bowl, followed by 1 cup of water. The oil rises to the surface of the bowl. Why?

Fluids can flow and change shape to fit their containers. Which two states are fluids?

Is jacob barnes a turd face?

A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done by the system. what is the change of the internal energy δeth of the system?'

Which of the following correctly arranges the planets by the size of their diameter in increasing order?