What is light?

1. A wave of vibrating electric and magnetic energy

2. A wave that travels by compressions

3. A wave that travels by rarefractions

4. A state of matter

Using Newton's second law of motion, if the force on an object is 20 N, and its mass is 5 g, what is its acceleration?

A NATO base in northern Norway is warmed with a heat pump that uses 7.0 °C ocean water as the cold reservoir. Heat extracted from the ocean water warms fluid to 80°C; this warmed fluid is used to heat the building.

The ability of a material to flow is called conductivity. malleability. density. viscosity.

To remove a tight-fitting jar, megan runs the lid under hot water. What happends to the jar lid when its temperature increases?

A car of mass 2300 kg collides with a truck of mass 4000 kg, and just after the collision the car and truck slide along, stuck together, with no rotation.

According to the kinetic-molecular theory, gases condense into liquids because of

What does sound travel throu better

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?