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
kolezko [41]
3 years ago
12

If a device uses 280 watts of power a day, about how many kilowatt-hours will it use in 30 days?

Physics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer:C

Explanation:

Power=280watts=280/1000 kilowatts

Power=0.28 kilowatts

Device use 0.28 kilowatts in 1 day

1day=24hours

Device use 0.28 kilowatts in 24hours

30days=30 x 24=720 hours

For 720 hours=(0.28x720) ➗ 24

For 720 hours=201.6 ➗ 24

For 720 hours=8.4

You might be interested in
Are amplitude and wavelength related?<br> A: Yes<br> B: No
Trava [24]

The answer is A.Yes

Explanation:

The amplitude of a wave is the height of a wave as measured from the highest point of the wave to the lowest on the wave.

4 0
2 years ago
Which of these substances will form a basic solution in water? A. Ca(OH)2 B. H3PO4 C. H2SO4 D. HCl
podryga [215]
Basic solutions are hydroxides therefore the answer is A ca(OH)2
3 0
3 years ago
A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?​
Ipatiy [6.2K]

Answer:

70m/s²

Explanation:

we will use the first equation of Dalton to find it

3 0
3 years ago
Systemic circulation requires help from which of the following bones, lungs, arteries and veins, or muscles
ahrayia [7]
Systemic circulation is between the heart and the rest of the body. Therefore arteries and veins are needed.
4 0
3 years ago
What type of radiation does not have to be observed above earths atmosphere? Visible light, X rays, Gamma rays, Ultraviolet radi
juin [17]
The correct answer is visible light.

Hope this helps.
6 0
3 years ago
Other questions:
  • Which factor varies between the isotopes of an element?
    5·2 answers
  • Please help with 3 questions about acceleration
    6·1 answer
  • Skateboard A Force: 33 N Time: 0.12 s Skateboard B Force: 33 N Time: 0.57 s Skateboard C Force: 33 N Time: 0.78 s Which skateboa
    9·2 answers
  • Randomly assigning students to two different groups in an experiment on
    15·2 answers
  • Explain why understanding bonding is important for understanding molecules.
    15·1 answer
  • Alicia está a punto de perder su bus. En un desesperado intento, corre a una velocidad constante de 5 m/s. Cuando está a 15 m de
    5·1 answer
  • Caleb is swinging Rachel in a circle with a centripetal force of 533 N. If the radius of the circle is 0.75 m and Rachel has a m
    12·2 answers
  • Dynamics Newton's 1st &amp; 2nd Laws
    13·1 answer
  • 1
    8·1 answer
  • Using the formula below, calculate the kinetic energy of the 6 gram stone going 10 Mph
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!