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
dmitriy555 [2]
3 years ago
10

A weightlifter lifts a 1,250 N barbell 2 m in 3 s. How much power was used to lift the barbell?

Physics
1 answer:
OverLord2011 [107]3 years ago
5 0
brainly.com/question/1478685 
You might be interested in
The treasure map gives the following directions to the buried treasure ​
iren2701 [21]

Answer:

North

South

East

West

Explanation:

please mark me as brainliest

3 0
2 years ago
Calculate the percentage increase in speed of the cyclist when the power output changes from 200 W to 300 W.
Rom4ik [11]

Answer:

<em>50%</em>

Explanation:

Given

Initial power = 200W

Final power = 300W

Increment = 300 - 200 = 100W

percentage increase = increment/initial power * 100

percentage increase = 100/200 * 100%

percentage increase = 0.5 * 100

percentage increase = 50%

<em>Hence the percentage increase in speed is 50%</em>

6 0
2 years ago
The edge of a flying disc with a radius of 0.13 m spins with a tangential speed of 3.3 m/s. The centripetal acceleration of the
Marat540 [252]

Answer:

Centripetal acceleration = 83.77m/s²

Explanation:

<u>Given the following data;</u>

Radius, r = 0.13m

Velocity, v = 3.3m/s

To find centripetal acceleration;

Centripetal acceleration is given by the formula;

Acceleration, a = \frac {v^{2}}{r}

Substituting into the equation, we have;

Centripetal \; acceleration, a = \frac {3.3^{2}}{0.13}

Centripetal \; acceleration, a = \frac {10.89}{0.13}

<em>Centripetal acceleration = 83.77m/s²</em>

<em>Therefore, the centripetal acceleration of the edge of the disc is 83.77 m/s². </em>

5 0
3 years ago
Read 2 more answers
Imagine a string of holiday lights, with many bulbs connected to each other by wires. One bulb burns out, causing the bulbs next
FinnZ [79.3K]

C. Series

Consider resistors in a circuit - if all the resistors in the circuit are in series and one of the resistors fails then no current can flow thru the circuit,

If the resistors are in parallel then then each resistor experiences the same voltage drop regardless of whether or not any resistor in particular is carrying current.

6 0
2 years ago
PLS ANSWERR THIS QUESTION FOR ME !!
MA_775_DIABLO [31]

Explanation:

20 joule is your answer

Answer:

here

mass m =100kg

distance d=50m

acceleration due to gravity a =10m/s²

work =force×displacement

= ma/d=100×10/50=20joule

3 0
2 years ago
Read 2 more answers
Other questions:
  • In which direction will the object accelerate?
    9·1 answer
  • A student m1 = 71 kg runs towards his skateboard, which has a mass m2 = 2.8 kg and is d = 2.75 m ahead of him. He begins at rest
    10·1 answer
  • One major advantage of alternating current over direct current is that you can use alternating current with a device known as a
    11·1 answer
  • Point charges q1=+2.00μC and q2=−2.00μC are placed at adjacent corners of a square for which the length of each side is 5.00 cm.
    12·1 answer
  • A car tries to tow a stranded van out of a ditch, and the car applies 300 N and pulls the van for 3 meters in less than a minute
    10·1 answer
  • Help with these questions
    5·1 answer
  • A circuit featuring multiple paths through which current can flow is best classified into which category?
    16·2 answers
  • A person throws a baseball from height of 7 feet with an initial vertical velocity of 50 feet per second. Use the vertical motio
    6·2 answers
  • Which two statements explain reasons to use a computer program to encode
    5·2 answers
  • If an object is dropped from 10 m above the ground, what is the height at which its kinetic energy and potential energy are equa
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!