Abucket of mass 2.00 kg is whirled in a vertical circle of radius 1.20 m . at the lowest point of its motion the tension in the rope supporting the bucket is 27.0 n.
a) find the speed of the bucket (hint: draw a free-body diagram of the bucket at the bottom of the motion.
b) how fast must the bucket move at the top of the circle so that the rope does not go slack? (hint: draw a free-body diagram of the bucket at the top of the motion.)

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

If a star is moving toward earth, it is