Questions from College Physics

Q: Suppose the change in angular position for each of the pairs of

Suppose the change in angular position for each of the pairs of values in Quick Quiz 7.1 occurred in 1 s. Which choice represents the lowest average angular velocity? Pairs of values From Quick Quiz...

Q: A 20.0-kg toboggan with 70.0-

A 20.0-kg toboggan with 70.0-kg driver is sliding down a frictionless chute directed 30.0° below the horizontal at 8.00 m/s when a 55.0-kg woman drops from a tree limb straight down behind the driver....

Q: Measuring the speed of a bullet. A bullet of mass m

Measuring the speed of a bullet. A bullet of mass m is fired horizontally into a wooden block of mass M lying on a table. The bullet remains in the block after the collision. The coefficient of fricti...

Q: A flying squid (family Ommastrephidae) is able to “jump

A flying squid (family Ommastrephidae) is able to “jump” off the surface of the sea by taking water into its body cavity and then ejecting the water vertically downward. A 0.850-kg squid is able to ej...

Q: A 0.30-kg puck, initially at rest on

A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of 2.0 m/s. After the collision, the 0.20-...

Q: A wooden block of mass M rests on a table over a

A wooden block of mass M rests on a table over a large hole as in Figure P6.84. A bullet of mass m with an initial velocity vi is fired upward into the bottom of the block and remains in the block aft...

Q: A 1.25-kg wooden block rests on a table

A 1.25-kg wooden block rests on a table over a large hole as in Figure P6.84. A 5.00-g bullet with an initial velocity vi is fired upward into the bottom of the block and remains in the block after th...

Q: A centrifuge in a medical laboratory rotates at an angular velocity of

A centrifuge in a medical laboratory rotates at an angular velocity of 3600 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleratio...

Q: A bicycle is turned upside down while its owner repairs a flat

A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops mov...

Q: The tub of a washer goes into its spin-dry cycle

The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 5.0 rev/s in 8.0 s. At this point, the person doing the laundry opens the lid, and a safety switch...