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
Marianna [84]
3 years ago
15

How much work is done when a 700 N refrigerator is lifted straight up a distance of 4 meters​

Physics
1 answer:
KatRina [158]3 years ago
8 0

Answer:

The work done is 2800 Joules

Explanation:

When a force causes a body to move, work is being done on the object

by the force

Work is the measure of energy transfer when a force moves an object

through a distance

→ Work = Force × Distance

→ The SI unit for work is the joule (J)

A refrigerator of 700 N is lifted straight up a distance of 4 meters

We need to find the work done​

→ The weight of the refrigerator is 700 N

→ The force = 700 Newtons

→ The refrigerator is lifted straight up 4 m

→ The distance = 4 meters

Substitute these values in the rule below

→ Work = Force × Distance

→ Work = 700 × 4 = 2800 Joules

<em>The work done is 2800 Joules</em>

You might be interested in
Two satellites revolve around the Earth. Satellite A has mass mmm and has an orbit of radius rrr. Satellite B has mass 6m6m and
True [87]

Answer:

r(b) = 2.45r

Explanation:

Parameters given:

Satellite A

Mass = m

Orbit radius = r

Satellite B

Mass = 6m

Orbit radius = r(b)

Gravitational force between Earth and Satellite A, F(A) is:

F(A) = (G*M*m)/r²

F(A) = GMm/r²

Gravitational force between Earth and Satellite B, F(B) is:

F(B) = (G*M*6m)/r(b)²

F(B) = 6GMm/r(b)²

Since F(A) = F(B),

GMm/r² = 6GMm/r(b)²

=> r(b)² = 6r²

r(b) = 2.45r

3 0
3 years ago
20 POINTS!!!!!!!!!!!!!! How do the charges compare when two objects are charged through friction?
Nataly_w [17]
The answer is A. Opposites attract, hence the attraction during friction. Balloons and hair would be a great example.
8 0
3 years ago
Read 2 more answers
2 Points
Tamiku [17]

Answer:

A. 0.32s

Explanation:

Lets find the initial velocity of the vertical component

Cos23=u/4

4cos23=1.6m/s

then time, t =2u/g

2×1.6/9.8

=0.32seconds

6 0
3 years ago
Read 2 more answers
I really need your help, please help me. How do I solve for ke without even having mass
Illusion [34]
I’m not fully sure - I’m studying the same topic as you in school and we haven’t covered it yet. BUT I can help you a teeny bit....

Note: You May know this but velocity means speed.

The formula for calculating kinetic energy is :

Ek = 1/2 mv2

E= kinetic energy ( J )
M= mass (kg)
V = velocity (m/s)

5 0
3 years ago
Describe the type of radioactive emission produced from the decay of carbon-14 to nitrogen-14 and predict its reaction to an ele
erastova [34]

Answer:

A beta emission(negatron)

Explanation:

1. A negatron resembles an orbital electron. It is represented as β⁻.

A negatron has a mass number of 0 but with a charge of -1

The decay of C-14 to N-14 can be depicted below:

¹⁴₆C → ¹⁴₇N + ₋₁⁰e

Both the mass number and atomic number is balanced according to the reaction.

2. In an electric field, the emission produced would be deflected towards the positive pole because it is negatively charged.

8 0
3 years ago
Read 2 more answers
Other questions:
  • According to Newton’s First Law of Motion, if a ball is rolled in a straight line in an open field, what will happen to the ball
    5·1 answer
  • A spring tide can occur at what day and month?
    14·1 answer
  • Consider two parallel wires where the magnitude of the left currentis 2 I0(io) and that of the right current is I0(io). Point A
    12·1 answer
  • Does your BMR increase decrease stay the same or dissapear as you age?
    10·1 answer
  • At the intersection of Texas Avenue and University Drive,
    5·1 answer
  • Hello please help i’ll give brainliest
    5·1 answer
  • A baseball pitcher throws a 0.14 kg ball toward a batter who is 18 m away.
    10·1 answer
  • A book falls off a shelf that and hits the ground at 10.0 m/s. How far did it fall?
    12·1 answer
  • A baseball player at practice is pushing a tackling dummy across the field. He initially has to push the 130 kg dummy with 600 N
    14·1 answer
  • Which two conditions explain why special technology is required to study the
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!