Suppose a vacuum cleaner use 120 j of electrical energy. If 45 j are used to pull air into the vacuum cleaner, how efficient is the vacuum cleaner?

Newton's Second Law says that force is equal to mass times acceleration. If the car and washer were more massive, you would need (more / less) force to accelerate car and washer equally. (5 pts)

Material from which of the following solar occurrences can reach Earth, causing radio blackouts? a. Flare b. Solar wind c. Coronal mass ejection d. Prominence

This is a drawing showing the direction and magnitude of all forces acting on a body

The graph below represents the relationship between the force exerted on an elevator and the distance the elevator is lifted.

Minimum-wage laws can keep wages a. above equilibrium and cause a shortage of labor. b. below equilibrium and cause a shortage of labor. c. above equilibrium and cause a surplus of labor. d. below equilibrium and cause a surplus of labor.

A cheetah can run from 0 to 70 mph in 2.2 seconds. what is the cheetah's top speed in m/s?

Which statement about how light travels is true? A Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida