1. A huge stone is pushed by a 46N of force. If there is only 12.5N of friction, and the stone's mass is 38 kg. what is the acceleration of the table?

Q: Four light bulbs, rated at 100 W, 75 W, 50 W and 25 W each, are in parallel. What is the total power…

A: Power rating of light bulb 1,  Power rating of light bulb 2,  Power rating of light bulb 3,  Power…

Q: 25. Calculate the average speed of a 4.0 x 102-newton weight being lifted vertically by a 2.00 x…

A: Given: The weight of the object is 4x102 N. The required by motor is 2x103 W.

Q: 5) What is the power dissipated by R2?

A: Given: R1=9 ΩR2=12 Ω The supply voltage is 12 V.

Q: A car generating a power of 92209.72watts is traveling on a road with a coefficient of kinetic…

A:

Q: A laptop computer consumes about 40 watts of electricity per hour when operating. At $0.20 per…

A: Power of laptop = 40 watt Time = 10 hours  Cost of electricity = $0.20 per kilowatt hour

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: A competitive diver with a mass of 71.1 kg stands on a diving board 38.1 m above the surface of the…

A:

Q: The potential energy of a 40-kg cannon ball is 14000J. How high was the cannon ball to have this…

A: Given data: Mass of the ball (m) = 40 kg Potential energy of the ball (PE) = 14000 J Need to…

Q: 15.0-kg canon is fired vertically upward from the ground, with an initial velocity of 569.0 m/s.…

A:

Q: 2. How long must a 100-W light bulb run in order to consume a million joules of electrical energy?…

A: (2)    Given data:                      Power (P) = 100 W                      Electrical Energy (E)…

Q: How long will it take a 2100 W motor to lift a 300 kg piano to a six story window locate 16.0 m a…

A:

Q: 8. What are two ways that energy can be conserved?

A: Introduction: Energy is the quantitative property of the body which have the tendency to do work, it…

Q: how much work can 150 w motor do in 3 mintutes

A: (given) Power (P) of motor = 150 watt time (t) = 3 minutes = 180 sec Power: Power is the rate at…

Q: cost of electricity

A:

Q: How long would it take a 600 W electric motor to do 17,500 J of work

A: Given data: Power (P) = 600 W Work (W) = 17,500 J Required: Time (t)

Q: A lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…

A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…

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: 1. How far must a 5N force pull a 50g toy car if 30joules of energy are transferred?

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

Q: Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he…

A: Given, Force = 45 N  Distance = 1 m

Q: What is the power of a light bulb if it uses 120J of energy in 4.0 seconds? Your answer: O 0.033 W O…

A: Given data : Energy used by light bulb, Time taken,

Q: A school is paying $0.12/kWh for electric power. To reduce its power bill,the school installs a wind…

A: Power generated per year

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

A: Power = workdone/time

Q: 3. A 60-kg person walks from the ground to the roof of a 74.8 m tall building. How much…

A:

Q: 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

A: Given: The energy required is 180 J. The time interval is 2.4 s.

Q: What is the work that a 256 W electric grinder can do in three minutes?

A: Solution-: power , P = 256 watt Time , t = 3 minute t = 3*60 second t = 180 second Work W = ?

Q: 1) yes Is it possible to do work on an SBiect that remains at rest? 2) no

A: Answer:-     (2)  no    No , it's not possible to do work on an object that remains at rest .…

Q: 18 A toy car works by means of a stretched rubber band. What form of potential energy does the car…

A: The Toy car works by means of a stretched rubber band. It is true that it will store POTENTIAL…

Q: A steel ball of mass 2-kg is dropped from rest from the top of a building. If the air resistance is…

A: Given data: The mass of the ball, m=2 kg. The air resistance, fr=0.012 v. The time taken by the…

Q: A speed boat requires 80kW to move at a constant speed  of 15 m/s.What is the resistance force of…

A: Resistance is a measure of the opposition to current flow in an electrical circuit. Here, we…

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

A:

Q: Which of the following would consume the least energy? a)A 60 W light bulb left on for an hour b)A…

A:

Q: A 300W computer is used for 90 minutes. What is the energy used in kWh? How much will it cost to run…

A: Given Data: The power used by the computer is: P=300 W The time duration in which P amount of power…

Q: How long will it take a 3750-W motor to lift a 425-kg piano to a sixth-story window 18.0 m above?

A: Given data: Power (P) = 3750 Watt Mass (m) = 425 kg Height (h) = 18.0 m

Q: 9. is the total amount of kinetic energy and potential energy in a system.

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

Q: An electric motor is rated to have a maximum power output of 0.67 hp. If this motor is being used to…

A:

Q: ED light bulb uses energy of 3W.  What is the electrical energy is used if the light is on for 2…

A:

Q: Collec X session.masteringphysics.com/myct/itemView?assignmentProblemID3135511215&offset3Dne Apps &…

A:

Q: A certain hand crank generates power at 75 W how long will it need to run to fully charge a battery…

A:

Q: You place an ice cube in a microwave oven. If it requires 32,165 J to melt the ice cube and the oven…

A: Given data:  Energy (E) = 32,165 J Power (P) = 98 W Required: Time in minutes

Q: n electric clothes dryer is rated at 3,500 W. How much energy does it use in 25 min

A: Given Power of electric clothes dryer is P=3500  W…

Q: In the Niagara Falls hydroelectric generating plant, the energy of falling water is converted into…

A: According to question--- Given value -- height = 52 m mass = 1 kg. required energy = 106 watt. We…

Q: A radio-controlled car powered by an electric motor accelerates from rest to 0.700 m/s in 28.0 ms.…

A: Given:Initial velocity of the car = 0 m/sFinal velocity = 0.7 m/sTime taken = 28 ms = 0.028 sWeight…

Q: A steel ball of mass 4-kg is dropped from rest from the top of a building. If the air resistance is…

A:

Q: A steel ball of mass 1-kg is dropped from rest from the top of a building. If the air resistance is…

A: Given data- Mass (m)=1 kg Air resistance (k)=0.017v Ball hits the ground after (t)=2.4 sec

Q: A spaceship needs a lot of fuel to reach the geostationary orbit. Compute the required height for a…

A: Given,

Q: A 100 g apple falls fom a tree fom a height of 2.8 m and reaches the ground at a speed of 5 m/s…

A:

Q: 17. A water pump is pumping up water from a well which is (a) How much work must be done by the pump…

A:

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!