During circular motion, the force that is perpendicular to the velocity and toward the center of the circle is the ... ?

An electric fan spinning with an angular speed of 13 rad/s has a kinetic energy of 4.6 j. what is the moment of inertia of the fan?

A ballon is losing altitude at a constant rate of 25 kilometers per day. if a landing is defined as an impact with a velocity of less than 1 meter per second and a crash is greater than 1 meter per second, determine whether or not the ballon will

A construction worker ascending at 6m/s in an open elevator 42 m above the ground drops a hammer. A. How long does it take the hammer to hit the ground? B. How fast is it moving when it hits the ground?

Identify one harmful environmental change that occurs when a volcano erupts.

How much heat has to be added to 508 g of copper at 22.3°C to raise the temperature of the copper to 49.8°C? (The specific heat of copper is 0.377 J/g·°C.)

An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then released, it vibrates vertically.

What is the definition of the coefficient of kinetic friction?

Maria and Carla were hiking when Maria tripped, fell, and sprained her ankle. Carla took out the first-aid kit and unwrapped a cold pack. Carla popped a vial that was inside the cold pack.

What instrument is used routinely to check a person's exposure to radiation?

describe the relationship that exists between amplitude of a wave and the amount of energy that the wave carries