How much energy is used to light a 45 Watt light bulb for 10 hours?

Q: What is the kinetic energy of a 110 kg object that is moving with a speed of 12.5 m/s?

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Q: A 50 - meter rope with a mass of 30 kg is dangling over the edge of a cliff. Ignoring friction, how…

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Q: What is the kinetic energy needed to move a 114 kg car forward with a velocity of 6 m/s?

A: Given the mass of the car m=114 kg and the velocity at which we need to run the car v=6m/s we have…

Q: I have 72 lightbulbs in my house. 53 of these lightbulbs are 65 watt and the other 19 lightbulbs are…

A: Determine the energy used in 1 year by 53 bulbs of 65 watts as follows.

Q: A box has a mass of 7.4 kg. The box is lifted from the garage floor and placed on a shelf. If the…

A: Mass of box =7.4 kg Potential energy when box is lifted to shelf =277 J

Q: What does one month's heating cost in the home of a neighbor who uses a heat pump to provide the…

A: Given,Coefficient of performance Heat energy producing rate Cost of electricity  Time We…

Q: A microwave oven has a power requirement of 1,248 W. A frozen dinner requires 5.0 min to heat on…

A: Given: The power required to microwave is 1248 W. The time required to heat the frozen dinner is 5.0…

Q: A charged rod of uniform linear charge density of 4.0 nC/m is placed along the x axis from x = -2.0…

A: Given data, Charge density = 4 nC/m

Q: The human body uses 7500 kJ of energy every day. What is the rate of energy consumption per second…

A: Given  Enrgy E=7500kJ

Q: A microwave oven has a power requirement of 1,255 W. A frozen dinner requires 4.2 min to heat on…

A: Given,

Q: A bakery has a 6,100W oven that runs every day from 5am until 7pm making tasty pastries for the…

A: Given: Power of bakery = 6100 W = 6.1 KW The time of bakery runs per day = 5 am to 7 pm = 14 hours…

Q: A 14 kilogram boulder falls off a cliff and strikes the ground after falling 40 meters. How much…

A: Given data- Mass of boulder m=14 kg It strikes the ground after falling 40 meters so h=40 m

Q: A 5 kg object is moving with a speed of 4 m/s at a height of 2m . What is the kinetic energy?

A: Given Data : The mass of the object is given as m = 5Kg. The speed of the object is given as v = 4…

Q: How much work (in J) is done to accelerate a car which has a mass of 1200 kg from a speed of 13 m/s…

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Q: How much work is done to get a 60 kg object to go from 5 m/s to 15 m/s?

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Q: A lamp consumes 1400 J of electrical energy in 12 seconds. what is it's Power?

A: Introduction :   In this question we are provided it value of work and time . With these data we…

Q: A person runs up 28 stairs of height 0.17 m. The person weighs 589.87 N. How much energy does it…

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Q: How much work does a 5000 Watt clothes dryer do when you run it for 30 minutes? 30 minutes = 1,800…

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Q: A person consumes about 2300 Cal a day. 1 Cal = 4186 J and 1 kWh= 860 Cal.If a power company charges…

A: person consumes = 2300 cal in one day 1 kwh = 860 cal  cost of 1 kwh energy = 12 ¢ means cost of 860…

Q: A crane lifts a 320 kg crate up a height of 6.5 m. The crane uses 17 kJ of energy to lift this…

A: in above question we to find the efficiency of crane.

Q: You place a mug with a mass of 2.5 kg on a table that's 36 in. above the ground, what is the mug's…

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Q: A fuel tank contains 25 × 1010 BTUs of energy. The fuel is converted into electrical energy in the…

A: Given:total energy of the fuel, E = 25×1010 BTU1 BTU = 1055.06 Jhence E = 25×1010×1055.06 J =…

Q: How much work is done?

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Q: A 45 watt light bulb runs for 78 seconds. How much energy does it use?

A: The rate of change of work is called power. The SI unit of power is the watt. In mathematical…

Q: If a vehicle has a horsepower of 300, how much energy does it burn in 2 minutes?

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Q: If a 1000 kg body is moving at 5 m/s, what is the kinetic energy?

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Q: A lamp consumes 500 J of electrical energy in 20 sec. What is the power of the lamp?

A: Power of the lamp is calculated by the formula:   Power = Energy consumed per unit time   Power =…

Q: If the average household in a region consumes about 5,250 kWh of energy per year. In the region, the…

A: Given Avg energy consumption in an year =  5,250 kWh  Avg annual solar energy potential  per year…

Q: How much work is done by 2 kg fish that changes its speed from 1 m/s to 3 m/s

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Q: A 600 N person runs up a flight of stairs in 10 seconds. How much power (in watts) was needed to run…

A: Given value--- weight = 600 N. time = 10 sec. vertical height = 11 m. We have to find--- power ?

Q: A 100 watt light bulb runs for 120 seconds. How much energy does it use?

A: Power of the light bulb, P = 100 W Time, t = 120 s   The amount of energy used by the light bulb is…

Q: If the energy of a mosquito (10−2 g at 0.5 m/s) were used to supply the energy needs of the world,…

A: N = Eworld/ Emusquito

Q: How much work is required to stop a 2000 kg car moving with a speed of 30 km/hr?

A: Data Given ,  Mass of the car ( m ) = 2000 kg Velocity ( v ) = 30 km/hr = 30 × 518 m/s…

Q: How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

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Q: you push a 10kg box with a force of 3 N over a distance of 4m. if 2 J of energy are lost as heat,…

A: Given: Box mass (m) = 10 kg Force applied on the box (F) = 3 N Distance covered by box (s) = 4 m…

Q: How much work (in J) is done to accelerate a car which has a mass of 1500 kg from a speed of 13 m/s…

A: Mass ( m ) = 1500 kg Initial Velocity ( u ) = 13 m/s Final Velocity ( v ) = 30 m/s

Q: An engineer measures the capacity of an electricity-generating plant. The capacity is  794MW . What…

A: Answer:-  Given  Capacity or power (P) = 794 MW    We know that    (1 MW = 106 watt)    P = 794 ×…