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
Hitman42 [59]
3 years ago
8

A 500kg elevator is raised to a height of 10 m in 10 seconds. Calculate the power of the motor.

Physics
1 answer:
Hunter-Best [27]3 years ago
3 0

Answer:

Correct answer: Third statement  P = 4900 W

Explanation:

Given:

m = 500 kg  the mass of the elevator

h = 10 m  reached height after t = 10 seconds

P = ? power of the motor

The formula for the calculating power of the motor is:

P = W / t

since work is a measure of change in this case of potential energy then it is:

W = ΔEp = Ep - 0 = Ep

In this case we must take g = 9.81 m/s²

Ep = m g h = 500 · 9.81 · 10 = 49,050 W ≈ 49,000 W

Ep ≈ 49,000 W

P = Ep / t = 49,000 / 10 = 4,900 W

P =4,900 W

God is with you!!!

You might be interested in
A coin completes 18 spins in 12 seconds. The centripetal acceleration of the edge of the coin is 2.2 m/s2. The radius of the coi
stellarik [79]

Answer:

2.5 cm

Explanation:

Number of spins in 12 seconds = 18

Number of spins in 1 second = 18 / 12 = 1.5

Number of spins in one second is called frequency.

f = 1.5 rps

ac = 2.2 m/s^2

Let r be the radius of coin

Centripetal acceleration, ac = r x w^2

2.2 = r x ( 2 x 3.14 x 1.5) ^2

2.2 = r x 88.7364

r = 0.025 m = 2.5 cm

3 0
3 years ago
Read 2 more answers
A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?
MakcuM [25]
The velocity of the car would be 100 kilometer per hour.
6 0
2 years ago
Read 2 more answers
The sky is blue because: Select one: a. the index of refraction for air is slightly larger for blue than for red b. atomic hydro
lapo4ka [179]

Answer:

a. the index of refraction for air is slightly larger for blue than for red

5 0
2 years ago
What happens to the boiling point of water when the pressure is increased?
Artemon [7]
You can drink it nothing will happen you caN BOIL ME SOME EGGS IF YOU WANT TOO
4 0
3 years ago
A land breeze forms when:
victus00 [196]

Explanation:

Its D. The warm air from the land moves towards the water

7 0
3 years ago
Other questions:
  • How much power is necessary to do 50 J of work in 5 seconds
    13·2 answers
  • A ship is moving with a constant acceleration of 36km/hr2 in a fixed direction speeds up from 12 km/hr to 18km/hr. Find the dist
    14·1 answer
  • Einstein and lorentz, being avid tennis players, play a fast-paced game on a court where they stand 19.0 m from each other. bein
    7·1 answer
  • To explore the deepest parts of the ocean scientist have to design special underwater vehicles why do these vehicles need to be
    8·1 answer
  • Asap pls answer right will mark brainiest ASAP ...
    14·1 answer
  • A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will the child have increased heari
    15·1 answer
  • What does temperature measure?
    10·1 answer
  • a particle moves a distance of 190 ft along a straight line. As it moves, it is acted upon by a constant force of magnitude 15 l
    6·1 answer
  • What is the rate of acceleration of a 2,000 kilogram truck if a force of 4,200 N is used to make it start moving forward?
    14·2 answers
  • The fine horizontal scratches etched onto a bullet after it has been fired are called?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!