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
Alenkinab [10]
3 years ago
7

500 J of work are done in 4 seconds to lift a 40 kg box to the top of a high shelf. How much power was required to complete the

lift?
Physics
1 answer:
Artemon [7]3 years ago
5 0

Answer:

125 W

Explanation:

Power = work / time

P = 500 J / 4 s

P = 125 W

You might be interested in
5) A person holds a 1.7 kg bucket and lets it move down at
Elena L [17]

Answer:

12.5J

Explanation:

Given parameters:

Mass of bucket  = 1.7kg

Height  = 75cm  = 0.75m

Unknown;

Work done on the bucket by the person  = ?

Solution:

To solve this problem, we use the work done equation;

  Work done  = force x distance  = mgh

 m is the mass  

  g is the acceleration due to gravity

  h is the height

Now, insert parameters and solve ;

     Work done  = 1.7 x 9.8 x 0.75  = 12.5J

7 0
3 years ago
5. A ball is sitting at rest on the floor. What will happen if a balanced force is applied to the ball? *
Leno4ka [110]

When the balanced force is applied on the ball It will roll away from the force.

<u>Explanation:</u>

  • A ball lies on the floor in rest. If the balanced force is applied to

         the ball, the force will push away.

  • The forces would include gravity and the forces of air particles entering the ball from almost all directions.
  • And the ground is exercising the force and shifting away from the impact.

<u></u>

<u />

3 0
3 years ago
Ntally Check for Understanding
Wewaii [24]

Answer: 34

Explanation:

34

3 0
3 years ago
A lab cart is loaded with different masses and moved at various velocities
Sedaia [141]
A lab cart is loaded with different masses and moved at various constant velocities? the anser should be

1.0m/s → 4kg
6 0
3 years ago
Fusion and fission are both processes that involve which fundamental force? to ask? A. gravitational B. weak nuclear C. electrom
marin [14]
Fusion & Fission are both processes that involve D. Strong Nuclear Fundamental forces
"D". is the answer
5 0
3 years ago
Other questions:
  • A cannonball is launched from the ground at an angle of 30 degrees above the horizontal and a speed of 30 m/s. Ideally (no air r
    12·1 answer
  • The specific heat of aluminum is 0.0215 cal/g°c. if a 4.55 g sample of aluminum absorbs 2.55 cal of energy, by how much will the
    12·1 answer
  • If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is
    13·2 answers
  • Help please suffering
    5·1 answer
  • What is the velocity of an object that has been in free fall for 0.10 s?
    8·1 answer
  • What are the 2 types of electricity
    8·1 answer
  • What is the total current in a parallel circuit containing a 12-V battery, a 2 Ω resistor, and a 4 Ω resistor?
    10·1 answer
  • Need thy help once again
    9·1 answer
  • The waves produced on the earth’s surface is called
    7·2 answers
  • • (-/1 Points) DETAILS OSCOLPHYS2016 9.5.WA.040.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!