1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmainna [20.7K]
4 years ago
12

A 120 volt refrigerator uses 650 watts. Calculate how much work is done by the refrigerator in one hour.

Physics
2 answers:
Blababa [14]4 years ago
8 0

1 Watt = 1 joule/second

650 watts = 650 joules/second

(650 J/sec) x (3,600 seconds/1 hour)  =  <em>2,340,000 Joules/hour</em>

-BARSIC- [3]4 years ago
7 0

Answer:

C) 2,300,000 J

Explanation:

A 120 volt refrigerator uses 650 watts. Calculate how much work is done by the refrigerator in one hour.

A) 9.7 J

B) 39,000 J

C) 2,300,000 J

D) 4,100,000 J

power is the rate at which work is done by a machine.

work done is the product of force and distance,

it is also when energy is expended by a machine

energy can be dissipated by the refrigerator in form of heat

power=650W

time=3600 secs

work done will be 650*3600

2340000.

approximately 2300000J

You might be interested in
How do you open a door if its not locked?
OLga [1]
If you're trying to get through a door with a standard spring lock—not a deadbolt—you can use a credit card or other flexible plastic card to open it. Just wedge the card into the gap between the door and the frame and bend it away from the knob. If it's the right kind of lock, it should come right open.
4 0
4 years ago
Does heavy force work under conditions of weightlessness in such an artificial earth satellite?
Afina-wow [57]

Answer: That is to say, a satellite is an object upon which the only force is gravity. Once launched into orbit, the only force governing the motion of a satellite is the force of gravity. Newton was the first to theorize that a projectile launched with sufficient speed would actually orbit the earth.

Explanation: Because Earth-orbiting objects follow elliptical paths around Earth and not a straight line, forces cannot, by definition, be balanced. Force is directional. It is a push or a pull in a particular direction.

3 0
3 years ago
Which has more potential energy: a book on the floor or the same book on a table? Explain your answer.
sergij07 [2.7K]

Answer:

The same book on a table has more potential energy.

Explanation:

The potential energy of a body on Earth is defined as the energy possessed by the virtue of its heights.

The equation for gravitation potential energy is given by

                                    P.E = mgh joules

From the above equation it is evident that when there is a change in the value of 'h', there is a change in the value of P.E

So, as per the above equation, the potential energy of book on floor

                                   P.E = m x g x 0                  ∵ h = 0 at floor

                                    P.E = 0

The same book on the table has some magnitude in 'h' greater than zero

So, the same book on a table has more potential energy.

8 0
3 years ago
the arm of a crane is 15.0 m long and makes an angle of 70.0 degrees with the horizontal. Assume that the maximum load for the c
Gnoma [55]

To find max torque you need component of force that is perpendicular to the direction of vector r. For second part just set the equation above equal to 2308 and solve for Fmax. Only difference is the angle

3 0
4 years ago
A meteoroid that reaches earths surface without burning up is a____
Ad libitum [116K]
<span>A meteoroid that reaches earths surface without burning up is a meteorite.</span>
3 0
3 years ago
Other questions:
  • Nstantaneous speed is measured _____. A. At a particular point in time B. Before the object begins to move C. Over the duration
    11·2 answers
  • A parallel-plate capacitor has a plate area of 0.3 m2 and a plate separation of 0.1 mm. If the charge on each plate has a magnit
    15·1 answer
  • What is a Hyper nova
    10·1 answer
  • Four particles are located at the corners of a square that is 50 mm on a side. All four particles carry a charge of magnitude 7.
    5·1 answer
  • How does inertia affect a person who is not wearing a seatbelt during a collision?
    5·1 answer
  • The hammer throw event in track and field involves spinning a heavy ball attached to a strong wire in a circle, then releasing i
    10·1 answer
  • Do you believe there is an end to the universe? Explain your answer
    5·1 answer
  • Two pictures show friends playing with a string telephone. in which picture can they hear each other
    6·2 answers
  • An object accelerates 12.0 m/s2 when a force of 6.0 Newton's is applied to it .What is the mass of the object?
    5·1 answer
  • Which evidence did Wegener use to develop the theory of continental drift?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!