A truck pulls a trailer at a constant velocity for 100 m while exerting a force of 480 N. Calculate the work done.

a) 380 J

b) 580 J

c) 48,000 J

d) 4.8 J

A ski lift takes a 60 kg skier to the top of a 100 m slope. Assuming her skis are frictionless, what is her speed when she gets to the bottom of the slope?

What is the force on a box that is being pushed to the right with 50n of force while, at the same time, being pushed to the left with a 20n force?

An empty spacecraft weighs 250,000 N on earth and carries 700,000 N of propellant. The spacecraftlands on Mercury, where the acceleration due to gravity is 3.7 m/s2.

Training only a few muscle groups leads to imbalances and an increased risk of injury.

Two large metal plates of area 0.88 m2 face each other, 4.8 cm apart, with equal charge magnitudes but opposite signs. The field magnitude E between them (neglect fringing) is 80 N/C. Find |q|.

A species of seabird nests every year on the face of one wall of cliffs on one island. If these birds nest on the ground above the cliffs, they run a high risk of having their eggs eaten by predatory snakes.

If the approximate energy of a photon present in an X-ray is 8.0 * 10-15 joules, what's the frequency of the X-ray? Given: Planck's constant is 6.63 * 10-34 joule·seconds. (A) 1.2 * 1014 hertz (B) 1.2 * 1019 hertz (C) 8.2 * 1018 hertz (D) 8.

Why is messi the best soccer player in the world

A data chrt shows the height of a person on his birthday each year for 10 years what is the dependent variable

A baking tray is made of metal because its