Physics, 23.04.2020 18:10 kaikao17801

A cockroach of mass m lies on the rim of a uniform diskof mass 3.27m that can rotate freely about its center likea merry-go-round. Initially the cockroach and disk rotate togetherwith an angular velocity of 0.318 rad/s. Then the cockroach walkshalfway to the center of the disk.

(a) What thenis the angular velocity of the cockroach-disk system?
(b) What is the ratioK/K0 of the new kinetic energy of thesystem to its initial kinetic energy?

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 10:20

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Answers: 1

Answer

Physics, 22.06.2019 12:10

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

Answers: 1

Answer

Physics, 22.06.2019 15:30

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Answers: 1

Answer

Physics, 22.06.2019 16:50

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =

Answers: 1

Answer

You know the right answer?

A cockroach of mass m lies on the rim of a uniform diskof mass 3.27m that can rotate freely about it...

Questions