An amusement park designer wants his swing to have a centripetal

acceleration of 19 m/s2. If the velocity of the swing is 17 m/s, how long

should the chain on the swing be?

O

A. 14.8 m

O

B. 14.0 m

15.2 m

13.6 m

Describe the processes of fuel ignition and combustion?

Which statement is true for a series circuit? Select one of the options below as your answer: A. The voltage is the same across all resistors in the circuit. B. As more resistors are added, the current will decrease. C.

Jerome solves a problem using the law of conservation of momentum. What should Jerome always keep constant for each object after the objects collide and bounce apart? a-velocity b-mass c-momentum d-direction

A police dog gets caught in a shootout. A 5 g bullet moving at 100 m·s-1 strikes the dog and lodges in his shoulder. Fortunately the dog survives. The bullet undergoes uniform acceleration and penetrates his shoulder to a depth of 6 cm.

Andrea and Chuck are riding on a merry-go-round. Andrea rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Chuck, who rides on an inner horse.

When two objects collide and stick together, what will happen to their speed, assuming momentum is conserved? They will move at the same velocity as whichever object was fastest initially.

Which planet shows evidence of water erosion?

What do nuclear fission and nuclear fusion have in common?

When plug prongs are connected to the metal case of an appliance, a part that should always be placed next to the case is a a. flat metal washer. b. hexagonal aluminum shoulder. c. steel nut. d. mica washer.

For a constant voltage, increasing the resistance will cause the current to decrease