a fantasy
  • A machine that promises more energy output than input is
  • A ball rolling down an incline has its maximum kinetic energy at
  • A block of ice sliding down an incline has half its maximum kinetic energy
  • An object that has kinetic energy must be
the sun
  • Both a 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is
  • A ball rolling down an incline has its maximum potential energy at
  • Earth's primary energy source is
  • A roller skate at rest may have
twice as much
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
  • Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. Compared with penetration of the slow arrow, the faster arrow penetrates...
  • A crate of grapes lifted 10 meters gains 200 J of potential energy. If the same crate is instead lifted 20 meters, its gain in potential energy is
  • A ball rolling down an incline has its maximum kinetic energy at
solar energy
  • A roller skate at rest may have
  • A machine that promises more energy output than input is
  • An object that has kinetic energy must be
  • Hydro and wind power are indirect forms of...
nuclear
  • Hydro and wind power are indirect forms of...
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
  • The most concentrated form of energy is
  • The unit kilowatt-hour is a unit of
2000 N
  • A hydraulic jack is used to lift objects such as automobiles. If the input force is 200 N over a distance of 1 meter, the output force over a distance of 0.1 meter is ideally...
  • Danny Diver weighs 500 N and steps off a diving board 10 m above the water. Danny hits the water with kinetic energy of
  • Phil applies 100 N to a pulley system and raises a load one-tenth of his downward pull. Ideally, the weight of the load is
  • Impulse involves the time that a force acts, whereas work involves the
energy
  • Hydro and wind power are indirect forms of...
  • A roller skate at rest may have
  • An object that has kinetic energy must be
  • Earth's primary energy source is
2 m
  • A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is...
  • The power required to exert 4-N force over 3 meters in 2 seconds is
  • A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above the ground is
  • The power expended doing 100 J of work in 50 s is
the bottom
  • A ball rolling down an incline has its maximum kinetic energy at
  • If an all-electric car has kinetic energy, then it also must have
  • A ball rolling down an incline has its maximum potential energy at
  • Relative to an initial height, an object raised twice as high has a gravitational potential energy
the same
  • A crate of grapes lifted 10 meters gains 200 J of potential energy. If the same crate is instead lifted 20 meters, its gain in potential energy is
  • Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. Compared with penetration of the slow arrow, the faster arrow penetrates...
  • A ball rolling down an incline has its maximum potential energy at
  • Both a 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is
100 J
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
  • A miracle car with a 100% efficient engine burns fuel having a 40- megajoules-per-liter energy content. If air drag and overall frictional forces at highway speeds totals 1000 N, what distance per liter can be...
  • A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed using 1000 J of work, is
  • A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is...
distance a force acts
  • A block of ice sliding down an incline has half its maximum kinetic energy
  • After rolling halfway down an incline, a marble's kinetic energy is
  • Impulse involves the time that a force acts, whereas work involves the
  • The bob of a simple pendulum has its maximum kinetic energy at the
1000 N
  • When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy
  • Impulse involves the time that a force acts, whereas work involves the
  • Phil applies 100 N to a pulley system and raises a load one-tenth of his downward pull. Ideally, the weight of the load is
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
four times as much
  • After rolling halfway down an incline, a marble's kinetic energy is
  • When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy
  • The work you do when pushing a shopping cart twice as far while applying twice the force is
  • Relative to an initial height, an object raised twice as high has a gravitational potential energy
of 40 J
  • Both a 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is
  • The work you do when pushing a shopping cart twice as far while applying twice the force is
  • When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
5000 J
  • Phil applies 100 N to a pulley system and raises a load one-tenth of his downward pull. Ideally, the weight of the load is
  • Danny Diver weighs 500 N and steps off a diving board 10 m above the water. Danny hits the water with kinetic energy of
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
Art has half the mass of Bart
  • If you do work on a skateboard loaded with friends in one-third the usual time, you expend
  • A crate of grapes lifted 10 meters gains 200 J of potential energy. If the same crate is instead lifted 20 meters, its gain in potential energy is
  • Acrobat Bart at the circus drops vertically onto the end of a see-saw, with his partner Art equidistant from the fulcrum at the other end. Art is propelled straight upward a distance twice that of Bart's dropping distance. Neglecting inefficiencies we see
  • A 1000-kg car and a 2000-kg car are hoisted to the same height. Raising the more massive car requires...
10%
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
  • A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is...
  • A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above the ground is
6 W
  • The power expended doing 100 J of work in 50 s is
  • A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed using 1000 J of work, is
  • The power required to exert 4-N force over 3 meters in 2 seconds is
  • A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above the ground is
the same as its potential energy
  • After rolling halfway down an incline, a marble's kinetic energy is
  • A ball rolling down an incline has its maximum potential energy at
  • A ball rolling down an incline has its maximum kinetic energy at
  • both require the same
slowed
  • Relative to an initial height, an object raised twice as high has a gravitational potential energy
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
  • The work you do when pushing a shopping cart twice as far while applying twice the force is
  • The most concentrated form of energy is
electricity and heat
  • Solar power is commonly used to produce
  • A roller skate at rest may have
  • After rolling halfway down an incline, a marble's kinetic energy is
  • An object that has kinetic energy must be
momentum, but less kinetic energy
  • A ball rolling down an incline has its maximum kinetic energy at
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
  • A golf ball is thrown at and bounces backward from a massive bowling ball that is initially at rest. After the collision, compared to the golf ball, the bowling ball has more
  • After rolling halfway down an incline, a marble's kinetic energy is
halfway down
  • A block of ice sliding down an incline has half its maximum kinetic energy
  • A machine that promises more energy output than input is
  • The bob of a simple pendulum has its maximum kinetic energy at the
  • Relative to an initial height, an object raised twice as high has a gravitational potential energy
heat
  • When Joshua brakes his speeding bicycle to a stop, kinetic energy is transformed to
  • A jack system will increase the potential energy of a heavy load by 1000 J with a work input of 2000 J. The efficiency of the jack system is...
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
  • When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy
50 W
  • A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed using 1000 J of work, is
  • A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is...
  • A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above the ground is
  • A melon is tossed straight upward with 100 J of kinetic energy. If air resistance is negligible the melon will return to its initial level with a kinetic energy of
four
  • Two identical particles move toward each other, one twice as fast as the other. Just before they collide, one has a kinetic energy of 25 J and the other 50 J. At this instant their total kinetic energy is
  • When wind encounters a wind turbine that produces energy, wind speed on the downside of the blades is
  • Two identical golf carts move at different speeds. The faster cart has twice the speed and therefore has _______ times the kinetic energy
  • Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. Compared with penetration of the slow arrow, the faster arrow penetrates...
moving
  • An object that has kinetic energy must be
  • If an all-electric car has kinetic energy, then it also must have
  • A ball rolling down an incline has its maximum potential energy at
  • A machine that promises more energy output than input is
bottom of its swing
  • The work you do when pushing a shopping cart twice as far while applying twice the force is
  • A ball rolling down an incline has its maximum kinetic energy at
  • A ball rolling down an incline has its maximum potential energy at
  • The bob of a simple pendulum has its maximum kinetic energy at the
0:0:1



Answered

Not Answered

Not Visited
Correct : 0
Incorrect : 0