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
Radda [10]
2 years ago
8

How much power is needed to produce 500 joules of work if 20 watts are used?

Physics
2 answers:
soldier1979 [14.2K]2 years ago
8 0
350 produce hope this helps
evablogger [386]2 years ago
6 0
Answer:25 produce
I might be wrong
You might be interested in
The masses of the Earth and Moon are 5.98×1024kg and 7.35×1022kg respectively, and their centers are separated by 3.84×108m.
bija089 [108]

Answer:

C) The Earth-Moon CM follows the orbit around the Sun. Earth and Moon rotate around their CM. The radius of rotation of Moon around the CM is much greater than radius of rotation of Earth around the CM.

Explanation:

At first we assume that both Earth and Moon can be treated as particles, the center of mass of the Earth-Moon system is obtained by using this formula:

r_{CM} = \frac{r_{E}\cdot m_{E}+r_{M}\cdot m_{M}}{m_{E}+m_{M}} (Eq. 1)

Where:

r_{E} - Location of the center of the Earth, measured in kilometers.

r_{M} - Location of the Moon, measured in kilometers.

r_{CM} - Location of the center of mass, measured in kilometers.

m_{E} - Mass of the Earth, measured in kilograms.

m_{M} - Mass of the Moon, measured in kilograms.

If we know that r_{E} = 0\,km, r_{M} = 3.84\times 10^{8}\,m, m_{E} = 5.98\times 10^{24}\,kg and m_{M} = 7.35\times 10^{22}\,kg, the location of the center of mass respect to the Earth is:

r_{CM} = \frac{(0\,km)\cdot (5.98\times 10^{22}\,kg)+(3.84\times 10^{8}\,m)\cdot (7.35\times 10^{22}\,kg)}{5.98\times 10^{24}\,kg+7.35\times 10^{22}\,kg}

r_{CM} = 4.662\times 10^{6}\,m

The Earth has a radius of 6.371\times 10^{6} meters, we notice that center of mass in located inside the Earth and the radius of rotation of the Earth around the center of mass is much greater than the radius of rotation of the Moon around the center of mass. That center of mass follows an orbit around the sun.

In consequence, correct answer is C.

4 0
3 years ago
During a race, a sprinter accelerated 1.8 m/s 2 in 2.5 seconds.How many meters per second did the sprint increase with this amou
trasher [3.6K]

During a race, a sprinter accelerated 1.8 m/s 2 in 2.5 seconds. The sprint increase with this amount of acceleration by 4.5 m/s.

<h3>What is acceleration?</h3>

Acceleration is the time rate of change of velocity.

Acceleration a = velocity v / time t

1.8 = v/2.5

v = 4.5 m/s

The sprint increase with this amount of acceleration by 4.5 m/s.

Learn more about acceleration.

brainly.com/question/12550364

#SPJ1

3 0
2 years ago
A 100-n object and a 50-n object are placed on scales a and b respectively inside an elevator ascending with constant velocity
german

Answer: b

Explanation:

8 0
3 years ago
Does any one know the answer
valina [46]
<span>Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record</span>
6 0
3 years ago
Which nutrient is the most difficult to break down and, thus, is generally used last for energy in the body?
photoshop1234 [79]

Answer:

proteins

Explanation:

protiens is the most difficult nutrient to brek down

8 0
3 years ago
Read 2 more answers
Other questions:
  • If the near-point distance of the jeweler is 22.0 cm, and the focal length of the magnifying glass is 7.70 cm, find the angular
    5·1 answer
  • The hammer of an electric bell strikes 1440 times in a minute and does a work of 0.2 J per strike. what is the power of hammer i
    7·2 answers
  • You are heating two chunks of metal of the same size and shape. One is made of lead and is heated
    7·1 answer
  • A small metal block with mass of 140 g sits on a horizontally rotating turntable. The turntable makes exactly 2 revolutions each
    15·1 answer
  • If the vector represents velocity this number represents the speed
    13·1 answer
  • An electric fan is turned off, and its angular velocity decreases uniformly from 550 rev/min to 180 rev/min in a time interval o
    6·1 answer
  • What do you observe when we view the orbit of the moon at our first<br> setting?
    12·1 answer
  • The rubber ducky has a mass of 5 grams and a volume of 75 mL. How much water does he displace?
    13·1 answer
  • The volume of a ball was measured at 500.0 cm3, and its mass was measured to be 404.2 g.
    11·2 answers
  • 13. What is the acceleration of a 1,000-kilogram truck with a net force of 7,000 newtons?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!