Power

Topic Page

Questions

• What is power?
• How are work and power related?
• How are force and power related?
• How does power affect work?
• How does power differ from energy?
• How does power change with voltage?
• How does power relate to torque?
• How does work relate to conservation of energy?
• How does work relate to gravitational potential energy?
• What is horsepower?
• What is reactive power?
• A cyclist increases his kinetic energy from 11 00 J to 5 200 J in 12 s. How can I calculate his power output during this time?
• A power station burns 80 kilograms of coal per second. Each kg of coal contains 25 million joules of energy. What is the total power of this power station in watts?
• A 1000-watt microwave oven takes 60 seconds to heat a bowl of soup. How many joules of energy does it use?
• It take a clothes dryer 35 minutes to dry a load of towels. If the dryer uses 6,750,000 joules of energy to dry the towels, what is the power rating of the machine?
• A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find the distance the object moved and the power of the machine.
• Emily’s vacuum cleaner has a power rating of 200 watts. If the vacuum cleaner does 360,000 joules of work, how long did Emily speed vacuuming?
• Suppose a force of 100 newtons is used to push an object a distance of 5 meters in 15 seconds. Find the work done and the power for this situation
• A wagon is pulled at a speed of 0.40 meters/sec by a horse exerting an 1,800-newton horizontal force. What is the power of this horse?
• A horse moves a sleigh 1.00 kilometer by applying a horizontal 2,000-newton force on its harness for 45 minutes. What is the power of the horse?
• A toaster oven uses 67,500 joules of energy in 45 seconds to toast a piece of bread. What is the power of the oven?
• A hair dryer uses 75,000 joules of energy in 60 seconds. What is the power of this hair dryer?
• A machine does 1,400 joules of work in 30 seconds. What is the power of this machine?
• A force of 30 newtons is applied to a machin e through a distance of 10 meters. The machine is designed to lift an objec t to a height of 2 meters. If the total work output for the machine is 18 newton-meters (N-m), what is the techanical advantage of the machine?
• A force of 200 newtons is applied to a machine in order to lift a 1,000-newton load. What is the mechanical advantage of the machine?
• Question #2c35a
• Question #7bd4e
• What is the power expended when a 17.3 N force pushes a cart 3.9 m in 0.9 seconds?
• A 100-newton object is lifted 100 meters in 100 seconds. What is the power generated in this situation?
• A car requires a constant power of #50# #hp# to maintain a constant velocity of #10# #ms^-1# (about #36# #kmh^-1#). What is the magnitude of the net force impeding motion (friction plus air resistance)?
• If a rocket with a mass of #7 kg# vertically accelerates at a rate of # 3/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?
• If a rocket with a mass of #700 kg# vertically accelerates at a rate of # 3/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of #900 kg# vertically accelerates at a rate of # 2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of #900 tons # vertically accelerates at a rate of # 8 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of #900# #"tons"# vertically accelerates at a rate of #3# #ms^-2#, how much power will the rocket have to exert to maintain its acceleration at #4# seconds?
• If a rocket with a mass of #900# #"tons"# vertically accelerates at a rate of #3# #"m/s"^2#, how much power will the rocket have to exert to maintain its acceleration at 2 seconds?
• If a rocket with a mass of #2000 tons # vertically accelerates at a rate of # 3 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 7 seconds?
• If a rocket with a mass of #2000 # tons vertically accelerates at a rate of # 6 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 7 seconds?
• If a rocket with a mass of #2000# #"tons"# vertically accelerates at a rate of #"14 m/s"^2#, how much power will the rocket have to exert to maintain its acceleration at 7 seconds?
• If a rocket with a mass of #2000 tons # vertically accelerates at a rate of # 4 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 7 seconds?
• If a rocket with a mass of #8000 " tons" # vertically accelerates at a rate of # 4 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 3 seconds?
• If a rocket with a mass of #2500# tons vertically accelerates at a rate of # 2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 3 seconds?
• If a rocket with a mass of #2500# tons vertically accelerates at a rate of # 7/3 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 12 seconds?
• If a rocket with a mass of #2500 tons # vertically accelerates at a rate of # 7/3 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 24 seconds?
• If a rocket with a mass of 2500 tons vertically accelerates at a rate of # 7/3 ms^(-2)#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of #2500 tons # vertically accelerates at a rate of # 5/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 15 seconds?
• If a rocket with a mass of #3500 tons # vertically accelerates at a rate of # 9/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 15 seconds?
• If a rocket with a mass of #3500# tons vertically accelerates at a rate of #1/2# #ms^-2#, how much power will the rocket have to exert to maintain its acceleration at 15 seconds?
• If a rocket with a mass of #3500 tons # vertically accelerates at a rate of # 1/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 7 seconds?
• If a rocket with a mass of #3500# tons vertically accelerates at a rate of # 1/2 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 12 seconds?
• If a rocket with a mass of #3500 "tons"# vertically accelerates at a rate of # 8/5 "m/s"^2#, how much power will the rocket have to exert to maintain its acceleration at 12 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 3/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 12 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 3/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 1/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 1/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 9 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 1/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 15 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 1/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 14 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 1/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 2/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 2/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 3 seconds?
• If a rocket with a mass of 3500 tons vertically accelerates at a rate of # 2/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 4/7 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 4/7 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 8 seconds?
• If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 12/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 11 seconds?
• If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 6/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 11 seconds?
• If a rocket with a mass of 4000 tons vertically accelerates at a rate of # 9/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 11 seconds?
• If a rocket with a mass of 2900 tons vertically accelerates at a rate of # 9/5 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of 2900 tons vertically accelerates at a rate of # 4/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 4 seconds?
• If a rocket with a mass of 2900 tons vertically accelerates at a rate of # 2/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?
• If a rocket with a mass of 2900 tons vertically accelerates at a rate of # 2/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of 3900 tons vertically accelerates at a rate of # 7/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of 3900 tons vertically accelerates at a rate of # 7/8 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a rocket with a mass of 3900 tons vertically accelerates at a rate of # 15/8 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
• If a #12 kg# object is constantly accelerated from #0m/s# to #60 m/s# over 8 s, how much power musy be applied at #t=3#?
• If a #12 kg# object is constantly accelerated from #0m/s# to #60 m/s# over 8 s, how much power musy be applied at #t=1 #?
• If a #12 kg# object is constantly accelerated from #0m/s# to #40 m/s# over 8 s, how much power musy be applied at #t=1 #?
• If a #12 kg# object is constantly accelerated from #0m/s# to #40 m/s# over 18 s, how much power musy be applied at #t=1 #?
• If a #12 kg# object is constantly accelerated from #0m/s# to #4 m/s# over 7 s, how much power musy be applied at #t=1 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over 6 s, how much power musy be applied at #t=1 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over 6 s, how much power musy be applied at #t=3 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over # 8 s#, how much power musy be applied at #t=3 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over # 8 s#, how much power musy be applied at #t=7#?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over # 9 s#, how much power musy be applied at #t=7#?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over # 9 s#, how much power musy be applied at #t= 6 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #16 m/s# over # 9 s#, how much power musy be applied at #t= 1 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 1 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 3 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 3 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 4 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 5 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 6 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 12s#, how much power musy be applied at #t= 9 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 5 s#, how much power musy be applied at #t= 1 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #18 m/s# over # 5 s#, how much power musy be applied at #t= 2 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #18 m/s# over # 5 s#, how much power musy be applied at #t= 3 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #18 m/s# over # 5 s#, how much power musy be applied at #t= 4 #?
• If a #2 kg# object is constantly accelerated from #0m/s# to #18 m/s# over # 6s#, how much power musy be applied at #t= 4 #?
• If a #2# #kg# object accelerates constantly from #0# #ms^-1# to #15# #ms^-1# over #6# #s#, how much power must be applied at #t=4#?
• If a #2 kg# object is constantly accelerated from #0m/s# to #15 m/s# over # 6s#, how much power musy be applied at #t= 2 #?
• If a #2 kg# object is being constantly accelerated from #0m/s# to #15 m/s# over # 6s#, how much power is being applied at #t= 2 #?
• If a #2 kg# object is being constantly accelerated from #0m/s# to #15 m/s# over # 6s#, how much power is being applied at #t= 3 #?
• If a #2 kg# object is being constantly accelerated from #0m/s# to #15 m/s# over # 6s#, how much power is being applied at #t= 1 #?
• If a #5 kg# object is being constantly accelerated from #0m/s# to #12 m/s# over # 6s#, how much power is being applied at #t= 1 #?
• If a #5 kg# object is being constantly accelerated from #0m/s# to #12 m/s# over # 6s#, how much power is being applied at #t= 3 #?
• If a #5 kg# object is being constantly accelerated from #0m/s# to #12 m/s# over # 16s#, how much power is being applied at #t= 1 s#?
• How much power is needed to accelerate an object with a mass of #12 kg# and a velocity of #5 m/s# at a rate of #2 m/s^2#?
• How much power is needed to accelerate an object with a mass of #4 kg# and a velocity of #7 m/s# at a rate of #5 m/s^2#?
• How much power is needed to accelerate an object with a mass of #4 kg# and a velocity of #3 m/s# at a rate of #6 m/s^2#?
• How much power is needed to accelerate an object with a mass of #4 kg# and a velocity of #8 m/s# at a rate of #6 m/s^2#?
• How much power is needed to accelerate an object with a mass of #4 kg# and a velocity of #8 m/s# at a rate of #2 m/s^2#?
• How much power is needed to accelerate an object with a mass of #5 kg# and a velocity of #3 m/s# at a rate of #2 m/s^2#?
• How much power is needed to accelerate an object with a mass of #5 kg# and a velocity of #3 m/s# at a rate of #12 m/s^2#?
• How much power is needed to accelerate an object with a mass of #5 kg# and a velocity of #3 m/s# at a rate of #9 m/s^2#?
• How much power is needed to accelerate an object with a mass of #6 kg# and a velocity of #3 m/s# at a rate of #9 m/s^2#?
• How much power is needed to accelerate an object with a mass of #6 kg# and a velocity of #3 m/s# at a rate of #7 m/s^2#?
• How much power is needed to accelerate an object with a mass of #6# # kg# and a velocity of #3# # ms^-1# at a rate of #1# # ms^-2#?
• An object with a mass of #5 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #2 m/s^2?
• An object with a mass of #5 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #4 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #4 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #4 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #5 m/s^2?
• An object with a mass of #4 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #4 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #1 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #2 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #1 #. How much power will it take to accelerate the object at #4 m/s^2?
• An object with a mass of #12# #kg# is moving at #9# #ms^-1# over a surface with a kinetic friction coefficient of #1#. How much power will it take to accelerate the object at #4# #ms^-2#?
• An object with a mass of #12 kg# is moving at #9 m/s# over a surface with a kinetic friction coefficient of #1 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #12 kg# is moving at #9 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #2 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #2 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #3 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #2 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #2 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #6 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #2 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #6 kg# is moving at #27 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #8 kg# is moving at #27 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #8 kg# is moving at #7 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #8 m/s^2?
• An object with a mass of #8 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #18 m/s^2?
• An object with a mass of #8 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #5 kg# is moving at #5 m/s# over a surface with a kinetic friction coefficient of #6 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #5 kg# is moving at #4 m/s# over a surface with a kinetic friction coefficient of #4 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #5 kg# is moving at #9 m/s# over a surface with a kinetic friction coefficient of #4 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #15 kg# is moving at #9 m/s# over a surface with a kinetic friction coefficient of #4 #. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #15 kg# is moving at #9 m/s# over a surface with a kinetic friction coefficient of #2#. How much power will it take to accelerate the object at #3 m/s^2?
• An object with a mass of #15 kg# is moving at #4 m/s# over a surface with a kinetic friction coefficient of #2#. How much power will it take to accelerate the object at #3 m/s^2?#
• Question #d10c6
• A mass of 35kg inside a 15kg wagon is pulled by a man across a sandy beach with a coefficient of .25, if the pulling force is 250N, at an angle 25 degrees above the horizontal, how do you determine the net force?
• Question #58f77
• Question #7dac9
• Question #da0e2
• Question #d93a0
• Question #fffc6
• In a weightlifting competition, Jenna does 150 joules of work in 3 seconds. How much power did she use?
• Question #7a2db
• Question #0b531
• Question #0eaf1
• Question #80175
• Finding Power and Resistance?
• Convert 40hp into watt?