Starting from rest, a disk takes 8 revolutions to reach an angular velocity ω at constant angular acceleration. how many additional revolutions are required to reach an angular velocity of 3 ω?

A 60-kg woman stands on the very end of a uniform board, which is supported one-quarter of the way from one end and is balanced. What is the mass of the board? a. 60 kg b. 30 kg c. 20 kg d. 15 kg e. 120 kg

Which of the following describes a magnet that only has a field when a current is present? permanent magnet magnetic domain electromagnet magnetic pole

You accidentally drop a book down a stairwell. Assuming no air resistance, how fast will the book be moving after 0.75 seconds?

The result of changing a physical sound wave into an analogous electrical signal using a transducer (such as a microphone) is called

Which kind of energy transformation occurs when the skater's board falls back to the ramp

You jog at 9.50 km / h for 8.00 km; then you jump into a car and ride an additional 16.0 km. What average speed must the car have for the average speed for the entire 24.0-km trip to be 24 km/h?

A tool industry characterized by the appearance of hand axes, a bifacial type of blade.

3 rights only for U. S citizens

How many protons, neutrons, and electrons are in oxygen?

gaseous h2 and br2 are added to an evacuated 1.15L container kept at 298K. The intial partial pressurre of H2 (g) is 0.782 atm and that of Br2 (g) is 0.493 atm. Find the partial pressures of HBr when the system reaches equilibrium