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
Alja [10]
3 years ago
7

Calculate the amount of energy transferred when a 40w light bulb is left on for 30 minutes.

Physics
1 answer:
Alinara [238K]3 years ago
3 0

Answer:

E=72000J or 72kj

Explanation:

The formula is E=pt you need to convert your t from minutes to seconds before proceeding

You might be interested in
When the plutonium bomb was tested in New Mexico in 1945, approximately 1 gram of matter was converted into energy. Suppose anot
gayaneshka [121]

Answer:

The value is E =  1.35 *10^{14} \ J

Explanation:

From the question we are told that

    The mass of matter converted to energy on first test is  m  =  1 \  g  = 0.001 \  kg

    The mass of matter converted to energy on second test m_1 =  1.5 \  g = 1.5 *10^{-3} \ kg

    Generally the amount of energy that was released by  the explosion is  mathematically  represented as  

         E =  m * c^2

=>       E =  1.5 *10^{-3}  * [ 3.0 *10^{8}]^2

=>       E =  1.35 *10^{14} \ J

7 0
3 years ago
When a potential difference of 12 V is applied to a wire 6.7 m long and 0.31 mm in diameter the result is an electric current of
anastassius [24]
The wire needs to be sauderwired to be connected back into place to get energy into column so it came function properly again!
7 0
3 years ago
A glass rod with yellow crosses on it touches a sheet of silk covered with negative signs on it. the sheet of silk is sticking t
forsale [732]

The image as shown here can here can be used to describe charging by induction.

<h3>What is a charge?</h3>

A charge may be positive or negative. One of the methods of transferring a charge is by induction.

In this case, an objects induces an opposite charge on a material.  The image as shown here can here can be used to describe charging by induction.

Learn more about charging by induction:brainly.com/question/10254645

#SPJ4

5 0
2 years ago
Why is water pollution a concern if water is continuously cycled through Earth’s systems?
kati45 [8]

Answer:Water pollution is a concern because since it is cycled threw the earths system it effect the earths system in a negative way.

Explanation:

I would wait for someone else to answer just in case I’m wrong.

7 0
3 years ago
When light generated by a lamp in a light microscope passes into a lens, the speed of the light _______ because the glass lens h
Alina [70]

Answer:

the answer is slows and greater

Hopes it helps!

6 0
3 years ago
Other questions:
  • Imagine that you are able to go on a fishing trip that you have always wanted to. Your friend gets a bite that exerts a force of
    10·1 answer
  • Why did the chicken cross the road
    5·2 answers
  • 2. Consider a conical pendulum with a bob of mass m = 77.0 kg on a string of length L = 10.0 m that makes an angle of ???? 3.00°
    8·1 answer
  • A block whose weight is 45 N rests on a horizontal table. A horizontal force of 36 N is applied to the block. The coefficient of
    8·1 answer
  • Two boxes connected by a light horizontal rope are on a horizontal surface. The coefficient of kinetic fric-tion between each bo
    8·1 answer
  • A torque of 35.6 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result
    12·1 answer
  • I’m a freshman, I got a 80% in the first quarter, 85% in the second and 70% in the third. I have a 46% in the fourth and 34 tota
    14·1 answer
  • A blank is a quality that has magnitude and direction
    7·1 answer
  • How far (in meters) will you travel in 3 minutes running at a rate of 6 m/s?
    11·1 answer
  • 1. An elevator is moving up at a constant velocity of 2.5 m/s, as illustrated in the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!