A farmhand pushes a bale of hay 3.9 m across the floor of a barn. she exerts a force of 88 n at an angle of 25∘ below the horizontal. a how much work has she done?

An increase of 50 dB increases the sound intensity by a factor of

Rills, gullies, streams, rivers and tributaries are all caused by

What factors affect the chemical properties of seawater

Which statement best compares momentum and kinetic energy?

When did abundant fossil evidence first appear in geologic record?

How does a stars life begin?

Bart stole a watermelon and ran 5,000 feet from the cops and they chase lasted 0.1 hours how fast was Bart running in miles per hour

suppose you had two small boxes, each containing 1.0 g of protons. (a) If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!

In a car changes its philosophy from 32 km/hour to54 km/hour in 8.0 seconds, what is its acceleration?

A car traveling at a rate of 30 ft/sec is approaching an intersection. When the car is 120 ft from the intersection, a truck traveling at a rate of 40 ft/sec crosses the intersection.