The ropes in (Figure 1) are each wrapped around a cylinder, and the two cylinders are fastened together The smaller cylinder has a diameter of 10 cm and a mass of 6.0 kg the larger cylinder has a diameter of 20 cm and a mass of 19 kg What is the angular acceleration of the cylinders? Assume that the cylinders turn on a frictionless axle.

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

The dominant wavelength of energy emitted by the sun is

The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.