93. How much power is required to do 180 J in 2.4s? . O a. 178 W O b. 430 W O c. 7.5 W O d. 75 W

Q: A baseball with a mass of 0.65 kg was pitch into the air at a height of 25 meter above the ground…

A: Given:-  A baseball with a mass m = 0.65 kg  The air at a height of h = 25 m  The velocity v = 15…

Q: 10. What is the work from 6m to 8m in the diagram below? а. 2J b. 4J C. 6J d. 8J Posten m) (N

A: According to question we need to find work done from 6m to 8m.

Q: Q86. A watt is a. 1 joule per second b. Equal to 1 (kg)(m^2)/s^2 c. The unit for all types of power…

A: Watt: It is the unit of power. Power is the rate of work done. 1 W=1 J/sSince J=Nm=kgm2/s2So1 W=1…

Q: 500 joules of work was done in 10 seconds, the power used was A. 0.025 watts B. 0.025 N C. 40 N D.…

A: Given value--- work = 500 J. time = 10 sec. We need to find--- Power ?

Q: What is the power in watts of a motor rated ¼ hp?…

A: Given: The power is 1/4 hp.

Q: The rate at which work is done is A. power. B. momentum. C. potential energy. D.…

A:

Q: How much time is required for a car engine to do 278 kJ of work, if its maximum power is 95 kW?

A:

Q: 4. I could better understand energy transfer if I ... Answer:

A: The capacity of doing work is called the energy of the body. The amount of work, that a body can do…

Q: 94. Which of the following is a unit of energy?* O a. W O b. kg m/s O c.J O d. m/s

A: Energy : Energy is defined as the capacity of doing work.

Q: How much power does it take to do 450 J of work in 5 seconds?   A. 0.011 W   B. 22.50 W    C.…

A: Given data: Energy, E=450 J Time, T=5 s

Q: 2. How much work is done by 15 kW engine during 3.5 min?

A: Given value--- power = 15 kW. time = 3.5 min . We have to find--- work ?

Q: An electric heater of 1000 W is used for two hours in a day? What is the cost of using it for a…

A:

Q: By converting the power of loudspeaker,3700 000 Watt into kilowatt, we get O a. 3700kW O b. 37000kW

A: This question is based on conversion of unit.

Q: All the following are units of power except a. hp b. watt С. J/s d. N.m/s e. kg.m/s^2

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: What is the difference between when work is done by a system and when work is done on a system? a.…

A: Introduction :- Here we need to think about the concept of energy (internal energy) which depends…

Q: n engine releases 1675 J of energy per cycle and performs 200J of work. What is the value of power i

A: Given Work done by the engine is W=200 J Time taken is t=0.89 s

Q: Your Lecturer in class made the following statement: "We do not buy electrons from Eskom but we buy…

A: Given  Power of hairdryer P=1200W=12001000kW=1.2kW Time it is run t=30 min=3060hr=0.5hr 1kWh cost…

Q: 11. Jam consumes 8.4 x 10^6 J of energy per day while maintaining a constant weight. What is the…

A: Given:- Jam consumes 8.4 x 106 J of energy per day while maintaining a constant weight Find:- What…

Q: An ice cube is placed in a microwave oven. Suppose the over delivers 105 W of power to the ice cube…

A:

Q: If a blow dryer uses 1.1 x 10³ J of energy, and it is in use for 15 minutes, what is its power? the…

A: Given, energy consumed E=1.1x103W

Q: A 60.0 kg trunk starts at rest on a student's dorm room floor. The student pushes the trunk a…

A: Solution:-Given thatmass of trunk (m)=60 kgdistance travelled by trunk (d)=10 mForce (F)=300…

Q: a. How much horsepower does a 25 W household lightbulb consume? (Express your answer using four…

A: Q. Given that Power consumed by lightbulb P = 25 W

Q: Find the simplest unit of the Q = va/w , in which v is velocity, a is acceleration and w is work

A: We have to understand the basic here.

Q: A 5-gm bullet is propelled by a powder charge producing 500 Cal of usable energy. What is the bullet…

A:

Q: Q36. Alamp consumes 1000 J of energy in 10 s, what is its power? O 100 W O 1000 W O 100000W 1kW

A: Given that:- Energy=1000joule Time=10sec

Q: What is the wattage of a light bulb that uses 35 J of energy in 7 s?

A: given,  Energy = 35 J  time = 7 s  Therefore, the wattage of the light bulb               =…

Q: You run a washing machine (512 W) and an electric clothes dryer (5000 W) for 1.5 h each daily. (a)…

A:

Q: The energy of 723 BTU is supplied to a blower per minute. How much power (in kW) is supplied for…

A: Given: The energy (E) of 723 BTU is supplied to a blower per minute. Introduction: The power (P) of…

Q: A motor consumes 15 kJ in 0.854 minutes. Calculate its power.

A: Given: Energy(E) =15kJ=15000J Time(t)=0.854minutes=51.24sec To find: Power(P)

Q: 6. Engines, including car engines, are rated in horsepower. What is horsepower? a. The force needed…

A: Horsepower is defined as power produced by the engine.

Q: 2348.8 kW to BTU/s 105.98 m³/kg to ft³/lb 3854.8 gal/min to m³/s

A: 2348.8 kW to BTU/sas 1kW =0.94782 BTU/sthus2348.8 kW=2226.23 BTU/s     Answer105.98 m3/Kg to ft3/lb1…

Q: 4. Solve the work done by a 600 W electric mixer in 2.3 minutes. 5. How much potential energy does a…

A:

Q: A heat turbine can generate a maximum power of 250 MW. How much work can the turbine do in 7.8 min?

A: Given Power of turbine = 250 MW Time taken = 7.8 min We have to calculate work done by turbine…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.