One watt-hour is equivalent to: A. 6.3 x 103 J B. 6.3 x 10-7 J C. 3.6 x 103 J D. 3.6 x 10-3 J

Q: Power is measured in the units of? Choose all that apply.   A. kJ (Kilojoules)   B. Nm/s (…

A: Power = EnergyTime=Js=WattPower =Force ×displacementTime=Nms

Q: Which of the following is not a unit of power?   a. J/s    b. W⋅s     c.  ft⋅lbs/s  d. hp

A: To find: which is not the unit of power?

Q: A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is…

A: Write the given values with the suitable variables. m=15.1 kgW=58 Ju=0 m/sv=1.50 m/s Here, m, W, u,…

Q: You place an ice cube in a microwave oven. If it requires 32,195 J to melt the ice cube and the oven…

A: The equation for the power delivered to the microwave oven. P = Q/t the power is directly…

Q: Calculate the potential energy of a 4.5 kg bowling ball that is on the ground. Assume that g = 9.8…

A: Given that:- Mass of the bowling ball=4.5Kg acceleration due to gravity is g=9.8m/s2 And as the ball…

Q: Q1/ Derive the power (watt) into its the basic S.I units?

A:

Q: For each of the following, is W-R positive, negative, or zero? A B F ф B d A d B W- is is WA-B A B A

A: The expression of work done is given by, W=Fdcosϕ Here, F is the force, d is the distance traveled,…

Q: Which of the following is not a unit of power? Select one: a. J/s b. W⋅s c. ft⋅lbs/s…

A: As we know that,            Power is the amount of energy transferred per unit time or rate of doing…

Q: How much work is needed to change the speed of a 2375 kg sport utility vehicle from 15.0 m/s to 60…

A: Given data:  Mass (m) = 2375 kg Initial velocity (Vi ) = 15.0 m/s Final velocity (Vf) = 60 m/s…

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: By converting the power of loudspeaker,3700 000 Watt into kilowatt, we get

A: Power is defined as the ratio of work done and the unit time. It is generally represented by the…

Q: Work is energy transfer. When work is positive A. energy is transferred to the surrounding. B.…

A: When work is positive then energy is transferred from surrounding to the system as per first law of…

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

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

Q: A particle moving in the y plane is subject to the force given by C F(x, y) = y2)3/2 where c is a…

A:

Q: 1. What amount of work is done when a 5 newton object is moved a distance of 10 meters?

A: Given data:   Force (F) = 5 N Distance (d) = 10 m Required: Work done (W)

Q: Work required to stop electron

A: Given:Mass of the electron, m=9.11×10−31kgSpeed of the electron, v=2.10×106m/sThe kinetic energy  KE…

Q: Match associated items - A. B. C. D. E.…

A: Terms given in left column : Power Physics unit of energy Physics unit of power Potential energy…

Q: QUESTION 4 The work done by any force can be calculated by using the formula W = F s cos(e) where…

A: The work by any force can be calculated by using the formula is    W=Fscosθ Here F is the applied…

Q: Choose the correct  letter only.  2.This is defined as 1 Nm.  A. Energy B. Watts C. Joule D.…

A: The Newton-meter is used as a unit of energy or work called Joule.   Work…

Q: 1. The force required to extend a spring to .05 meters from equilibrium is 2 N. a. Find the spring…

A: Given data, force (F)=2N Spring extension (x)=0.05m

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: A 1900 lb. race car accelerates from rest to 275 mph in a quarter mile race. Determine how much work…

A: Given that, the weight of the car is w=1900lb the initial velocity of the car is u=0mph And the…

Q: A 1400-N crate rests on the floor. a.) How much work is required to move it at constant speed 5.0 m…

A: Given Weight of the crate is Fg=1400 N Displacement of the crate is d=5.0 m Frictional force is…

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: 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: ents took turns applying a force to an object in a physics lab. The graph below shows the force…

A: Four students took turns applying a force to an object in a physics lab. The graph below shows the…

Q: A projectile is launched from the edge of a cliff with a velocity of 15.0 m/s at an angle of 30.0…

A: Given Data:- Initial velocity of the projectile is vi=15.0 m/s. The projectile is launched at an…

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

A:

Q: From the given figure, determine the rectangular representation of the 500 N force. F = 500 N O a. F…

A: To solve this question we will use the concept of vector transformation. Let the angle between the…

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 force is given as Fx(x) = –kx4, where the constant k = 22 N/m4. Determine the work done to change…

A: Expression for work done -  W=Fdx Where,  F = Force  dx = Displacement

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: Chichay uses the washing machine which consumes energy at 300 Watts at normal washing speed. How…

A: Given(s): Power of the machine, P=300 W=0.30 kW It runs for, t=80 min=8060h=43 h Cost of…

Q: Write an expression for the kinetic energy of an object in a circular orbit. Write this in terms of…

A:

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: Determine the unit of energy if the power is measure in watts and the time in minutes.

A: Energy is the ability to do work.  Power is the rate at which work is done.  We can express energy…

Q: 33. Energy is a _________ quantity.   a. Scalar b. Vector

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

Q: 1. Energy 2. Joules A 3. Work C 4. Power E A. The units for work and energy. B. Stored or gained…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Calculate the number of kilowatt-hours (kW-hrs) consumed in a week by an 850- Watt window air…

A: Given,Power of Air conditioner =850 Watt

Q: A 100-W light bulb is left on for 10.0 hours. Over this period of time, how much energy was used by…

A: Given that,Power of bulb,P=100 wattTime for which bulb is left turn on, t=10 hours=10×3600 sec=36000…

Q: A person does 400 J of work in 5 sec. Power of the person is calculated tto be ? Choose one correct…

A: Given, Work done by the person W = 400 J Time t = 5 sec We know the expression for power  P=Wt