A 50kg box is pulled on by a rope. The rope applies a horizontal force of 180 N to the box. What is the normal force exerted on the box by the floor?

The core muscles stabilize and protect the spine.

Eclipse of the sun occurs (A). When the moon is between the sun and the earth. (B). When the earth is between the moon and the sun. (C). When the sun and the earth are parallel to each other. (D). When the moon is directly above the earth. (E).

How many mitochondria dos an average human muscle contain?

A cannon tilted up at a 30 angle fires a cannon ball at 80 m/s from atop a 10-m-high fortress wall. what is the ball's impact speed on the ground below?

What is the molarity of a solution that contains 6 moles of solute in 2 liters of solution?

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

How much force would be needed to move a car with the mass of 100kg to an acceleration of 5m/s/s?

A pendulum bob is made from a sphere filled with water. What would happen to the frequency of vibration of this pendulum if the sphere had a hole in it that allowed the water to leak out slowly?

Elias serves a volleyball at a velocity of 16 m/s. The mass of the volleyball is 0.27 kg. What is the height of the volleyball above the gym floor when its total mechanical energy is 41.70 J? Round to the nearest number.