A weightlifter raises a 200-kg barbell with an acceleration of 3 m/s^2. How much force does the weightlifter use to raise the barbell?

How long would it take for a sound impulse to travel through an aluminum rod 1,500 meters long?

A moving electron accelerates at 5200 m/s2 in a 55.0° direction. After 0.530 s, it has a velocity of 6598 m/s in a - 20.5º direction. What is the x-component of the initial velocity?

What is the momentum of a 248 g rubber ball traveling at 30.0 m/s?

A certain cloud contains 220 water droplets per cubic centimeter. If 1cubic meter = 1,000,000cubic centimeters, how many drops are in one cubic of the cloud?

Fred is playing the slot machines. After a certain number of plays, he wins a few coins, but Fred is unable to determine how many plays he needs to win. Which of the following statements is true? A.

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.