Problem 9: You leave a 110 W light bulb on for 6 hours in the day. Part (a) Express energy through power P and time interval At. E = Part (b) How much energy has been used in joules? E = Part (c) If the energy used were used to lift a weight of m = 235 kg, write an equation of the height h that the weight can be lifted in terms of P, At, and m? h =

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 2841…

A: Volume of water fall per second =2841 m3 Height H = 442m

Q: (a) Briefly explain the relationship between gravitational potential energy (GPE) and kinetic energy…

A: Relationship between kinetic energy and potential energy due to gravity is              ΔKE =…

Q: A 15.0-g bullet is accelerated from rest to a speed of 780 m/s in a rifle barrel of length 72.0 cm.…

A:

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A: Solution:-

Q: What is the type of Energy possessed by a stretched rubber band? A) Potential energy B) Kinetic…

A: The stored energy based on the position, arrangement or state of the object or substance is called…

Q: Which of the following statements is/are true? Check all that apply. The SI unit of power is the…

A: Horsepower is not the SI unit of power, the SI unit of power is the watt (the statement is False).…

Q: A. Calculate the total mass (kg) of a person climbing a hill 200 meters high if the work done is…

A:

Q: Q20. A weighing bar with 75 kg mass is lifted to a height of 1.5 m by a weight lifter. What would be…

A: Mass of the barbell, m = 75 kg Height to which it is lifted, h = 1.5 m Potential energy of barbell ,…

Q: Problem A moving electron has a Kinetic Energy Kg. After a net amount of work is done on it, the…

A:

Q: A object of mass 6kg thrown vertically upward direction with the velocity of 30 m/s. What is the…

A: Given value--- mass = 6kg. initial speed = 30 m/s. We have to find--- What is the maximum height…

Q: Your friend wants to solve the world’s energy problems by inventing a device that will deliver ten…

A: The world or the universe works on some conservation laws. The energy conservation says that energy…

Q: A 0.058-kilogram tennis ball is thrown into the air and reaches a height of 3.5 meters. How much…

A: Potential Energy (PE) is given by = mgH m = mass, g = acceleration due to gravity, H = height  m =…

Q: The specific energy and density of gasoline is -47.3 MJ/kg and 716 kg/m3, respectively. What is its…

A:

Q: A 5 kg object plunged from a height of 19 feet and hits a spring that has a height of 0.6 meters. A)…

A: Given Data : The height of the object is given as H = 19ft. The height of the spring is given as h =…

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 2974…

A: a) The total energy available is, TE=efficiencymgh=0.732974 m31000 kg1 m39.80 m/s2133 mTE=2.83×109 J

Q: Justin works at a spring factory and he was assigned to test a certain spring, whose constant is 50…

A:

Q: How much energy is required to run a 35 W light bulb for 4.0 min? a. 840 J b. 1400 J c. 140 J d.…

A:

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 234/…

A: Given that Volume of water V = 2347 m3 Net mass of the water m = 2347000 kg Height of fall h = 112 m

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A: Given: Initial Kinetic energy K1 Final velocity is one fourth of the initial velocity  To find: Work…

Q: A hiker of mass 63 kg is going to climb to the top of mount tam, which has an elevation of 2,574 ft.…

A: Given,Mass of the hiker, m = 63 kgheight of the mountain, H = 2574 ftThe hiker starts from, h = 375…

Q: (a) What is the gravitational potential energy (in J) relative to the generators of a lake of volume…

A:

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A: Let the mass of electron = m Initial kinetic energy (K1) = (1/2)(m)(v21)Final velocity = one quarter…

Q: A 40.0 kg skier skis down a 12.0o slope from a height of 100.0 m to a height of 25.0 m.  1a) What…

A: Given data: The mass of the skier, m=40.0 kg. The angle of inclination of the slope, θ=12°. The…

Q: Calculate the work done when a 5.0 kg bag of apples is lifted 1.2 m off the ground.  13 c)…

A:

Q: (a) What is the average power consumption in watts of an appliance that uses 5.93 kW · h of energy…

A: The energy consumed by any electrical appliance in a given time period is given by following…

Q: A pump discharges 500 liters of fuel oil into a tank 20 m above the pump’s intake in 10minutes. a.…

A: Given: Height, h=20 m Time, t=10 min=10×60 s=600 s Mass: m=500×0.89×1000    =445000 g    =445 kg a)…

Q: Convert the following quantities as requested (no computation required): (a) 10 cg =  ___g (grams);…

A: (a) solution- We know that  1 cg = 0.01 g So, 10 cg = 10× 0.01g = 0.1 g = 10-¹ g (a)Answer=> -1

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A:

Q: 1.An electric motor with a 2 hp output drives a machine with an efficiency of 45%. What is the…

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Q: Suppose that the average U.S. household uses 12600 kWh (kilowatt-hours) of energy in a year. If the…

A: (a). the average rate of power consumed by the house is

Q: During running, the velocity of blood flow is about (100 cm / s) in the aorta. What is the kinetic…

A:

Q: How much energy does a 100kg object moving at 10 m/s have? a.) 500 J b.) 10000 J c.) 5000 J d.) 1000…

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Q: 5. How fast would a 61 kg person have to run (in m/s) in order to have same energy as that of a 110…

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Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A: The initial kinetic energy K1 of the electron is,  K1=12mv21 ----1  Here, m is the mass of the…

Q: What are the energy and average power output by a 55 kg cyclist would be required to ride up a 5 km…

A:

Q: A 60.0 - kg athlete leaps straight up into the air from atrampoline with an initial speed of 9.0…

A: (a)The athlete interacts with the trampoline. She pushes the elastic material down and gets launched…

Q: A certain house uses an average power of 485 Watts all day, everyday, for a 31 day month.  If the…

A: The power (P) consumed by the house in a day is 485 W. The energy consumed by the house in a day can…

Q: 1. (a) What is the available energy content, in joules, of a battery that operates a 2.00-W electric…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1. A woman runs a kilometer using a force of 210N and a power output of 500W. How long in minutes…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Solar power potential is around 5 kW/m2. What wind speed gives the same power potential?

A: According to question--- Given data-- Solar power potential p = 5 kW/m2 . We have to find  - What…

Q: How much energy goes a 1000 kg top gear car have if it is moving at a speed of 25.5 m/s? a.) 650250…

A: Given: Mass m=1000Kg speed v=25.5m/s To find: energy=?

Q: Due date: wed, Oci T6 2019 **34. Initially, a 10-kg block is sliding along a level floor at a speed…

A: a)a)since the block is moving on the level floor, the potenitial energy will be zero. thus, the…

Q: A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12…

A: Given, Mass of man,m=70 kg Height,h=12 m Time, t=20 s

Q: A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12…

A: Given data: Mass of the man m = 70 kg Height of the floor =12 m

Q: A hydroelectric generator converts kinetic energy of water into electrical energy Each second 1022…

A: Given:  Volume, V = 1022 m3 height, h = 208 m  efficiency = 65 %