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
skelet666 [1.2K]
3 years ago
6

Please help on this physics question?

Physics
1 answer:
Anton [14]3 years ago
5 0
W=F*d

W=-60N*5m=-300J

So friction does -300J of work on the box
You might be interested in
How long would it take a person to come to a stop if they were going
hammer [34]
33 mins hope it’s right
8 0
3 years ago
Imagine you use Nitrogen as your gas. If you have the cold side as cold as you can without liquefying it (78 K), and run the hot
alina1380 [7]

Answer:

The efficiency of a Stirling engine is 74%

Explanation:

Given:

Temperature of gas when it is cold T_{1} = 78 K

Temperature of gas when it is hot T_{2} = 300 K

The efficiency of a stirling engine,

  \eta =1 - \frac{T_{1} }{T_{2} }

  \eta = 1- \frac{78}{300}

  \eta = 1-0.26

  \eta = 0.74

∴ \eta = 74 \%

Therefore, the efficiency of a Stirling engine is 74%

5 0
3 years ago
Which of the following most likely causes Earth's inner core to be a solid?
Natalka [10]
B the metals in the core are very heavy
4 0
3 years ago
Why do functionalists argue that the incest taboo is a nearly universal norm?
katrin [286]
The most appropriate answer is C. the incest taboo facilitates the socialization of children and avoids role confusion. 
According to functionalism; the family performs several essential functions fpr society. It socializes children, it provides emotional and practical support for its members, it helps regulate sexual activity and sexual reproduction, and it provides its members with a social identity.
6 0
3 years ago
The pressure of liquid varies as per it's depth.
irga5000 [103]

Answer: The pressure in a liquid is different at different depths. Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. The greater pressure at the bottom would give a greater 'force per unit area' on the wall.

Explanation:

6 0
3 years ago
Other questions:
  • Jim Abbott was drafted ________ overall in the first round of the 1989 draft.
    6·2 answers
  • An ethylene glycol solution contains 25.4 g of ethylene glycol (C2H6O2) in 89.0 mL of water. (Assume a density of 1.00 g/mL for
    11·1 answer
  • Assume that the car at point A and the one at point E are traveling along circular paths that have the same radius. If the car a
    14·2 answers
  • In the Bronsted-Lowry Theory of acids and bases, an acid is this.
    15·1 answer
  • The magnetic field is decreasing. What is the induced electric field?
    11·1 answer
  • Heat is transferred at a rate of 2 kW from a hot reservoir at 800 K to a cold reservoir at 300 K. Calculate the rate at which th
    9·1 answer
  • Room heaters are placed on the floor of a room; Give reason:
    15·1 answer
  • What is an static electricity
    8·1 answer
  • Un auto recorre 120 m en 30 s. Determine la distancia que recorre en 2 min.
    8·1 answer
  • e) A escalator carries 60 people of average mass 70kg to a height of 5m in one minute. Find the power needed to do this? 4​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!