Author Question: A 1938 nickel has a diameter of 21.21 mm, a thickness of 1.95 mm, and weighs 0.04905 N. What is its ... (Read 106 times)

jace · **on:** Jul 29, 2018

A 1938 nickel has a diameter of 21.21 mm, a thickness of 1.95 mm, and weighs 0.04905 N. What is its density?

A) 1.37 10-4 kg/m3
B) 1.82 103 kg/m3
C) 19.3 103 kg/m3
D) 3.63 103 kg/m3
E) 7.26 103 kg/m3

Question 2

Two wheels with fixed centers are in contact with each other and rotate without slipping. Wheel A has a radius of 12.0 cm and is rotating with an angular speed of 35.0 rad/s. Wheel B has a radius of 17.0 cm. What is the angular speed of wheel B?

A) 49.6 rad/s
B) 24.7 rad/s
C) 5.83 rad/s
D) 4.97 rad/s
E) 12.4 rad/s