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
What type of heat transfer is used in a restaurant that uses ovens with fans inside?
Marina CMI [18]

convection


please mark brainliest any other problems or questions feel free to ask


5 0
3 years ago
Suppose you are in an elevator. As the elevator starts upward, its speed will increase. During this time when the elevator is mo
kkurt [141]

Answer:increased

Explanation:

It is given that elevator speed is increasing while moving upward i.e.its acceleration is increasing .

This causes the apparent to be increased if measured using weighing machine.

considering upward direction to be positive

N-mg=ma

N=m(g+a)

where N=Normal reaction=Apparent weight

a=acceleration of Elevator

thus you feel as if your weight is increased.

6 0
3 years ago
All phase changes are .an example of a phase change is an ice cube melting
masha68 [24]

Answer:

a

Explanation:

a

8 0
3 years ago
Acceleration is generally defined as the time rate of change of velocity. When can it be defined as the time rate of change of s
Lena [83]

Answer:

When the velocity doesn't change its direction

Explanation:

Since velocity vector has 2 components: direction and magnitude, and speed is the velocity's magnitude. So if the velocity doesn't change its direction, we essentially use its magnitude, aka speed, to calculate the rate of change for acceleration.

8 0
3 years ago
Read 2 more answers
Your friend from France came to visit you when she was packing she went on weather.com and found that the average temperature in
Marina CMI [18]

Answer:

Because there is not as much cold as it was in France.

Explanation:

The average temperature in France during January ranges from 2.7° to 7.2° celsius which makes it the coldest month of the year. But since she comes to know that average temperature in Annville ranges 31° celsius which implies that the temperature is normal there and therefore, she packs sleeveless tops and shorts. Coats would not be required in a hot weather and hence, she does not pack it.

8 0
3 years ago
Other questions:
  • "An empty cylindrical barrel is open at one end and rolls without slipping straight down a hill. The barrel has a mass of 19.0 k
    15·1 answer
  • The distance to the North Star, Polaris, is approximately 6.44 3 1018 m.
    12·1 answer
  • What are the properties of elements based on their placement on the periodic table?
    11·1 answer
  • What does a notational analyst do
    11·1 answer
  • Please type a three paragraph essay (5-7 sentences per paragraph), and the essay should include the following things:
    12·1 answer
  • A heavy truck and a small truck roll down a hill. Neglecting friction, at the bottom of the hill the heavy truck has greater
    5·1 answer
  • Reason why ink is most likely to ooze out of a pen when one is up in an airplane​
    13·1 answer
  • An airliner must reach a speed of 110 m/s to take off. If the length of the runway is 2.4 km and the aircraft accelerates from r
    6·1 answer
  • The Milky Way is our home galaxy. Which of the following are the main components of a galaxy?
    9·1 answer
  • Water being turned into ice cubes in a freezer is an example of _____.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!