When you cut a board with a power saw as compared with a handsaw, how much work do you do with the power saw?

A. less work in less time

B. the same amount of work in less time

C. more work in less time

D. less work in more time

g 'A fire hose ejects a stream of water at an angle of 31.6o above the horizontal. The water leaves the nozzle with a speed of 29.3 m/s.

Energy degradation takes place in the energy transformations which occur in the generation of electrical power. Explain what is meant in this context by energy degradation.

A parallel-plate capacitor is connected to a battery. The energy of the capacitor is U0. The capacitor remains connected to the battery while the plates are slowly pulled apart until the plate separation doubles. The new energy of the capacitor is U.

Twoâ cars, 405 kilometersâ apart, begin driving toward each other on aâ long, straight highway. one car travels 70 kilometers per hour and the other 65 kilometers per hour.

During a hard sneeze your eyes might shut for 0.5sec. if you are driving a car at 90kmhr during such a sneeze, how far does the car move during that time?

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.

What is the kinetic energy (in joules) of a. 2 kg softball thrown at a speed of 40 m/sec? (answer should be in correct units)

How is the information sent back to earth by the robots?

During which change of state do atoms lose energy? sublimation freezing boiling melting

Why does the rotation of earth require people to establish times zones?