An electromagnet consists of:

The two blocks a and b have a mass of 5 kg and 10 kg, respectively. if the pulley can be treated as a disk of mass 3 kg and radius 0.15 m, determine the acceleration of block a. neglect the mass of the cord and any slipping on the pulley.

Which of the following quantities are zero for an object traveling in a circle at a constant speed? There may be more than one correct answer.

Calculate the wave speed i the wavelength = 64m and the wave period = 4s

Does heat always give of heat

Which wave has a disturbance that is perpendicular to the wave motion? no wave has a disturbance that is perpendicular transverse surface longitudinal

If earth somehow expanded to a larger radius, with no change in mass, how would you're weight be affected? How would it be affected if earth shrunk?

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. Which of the following best describes how such a telephone is able to transmit and receive information? A.

Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.