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
Alexandra [31]
4 years ago
6

1. When is positive work done on a system? When is negative work done?

Physics
1 answer:
FinnZ [79.3K]4 years ago
3 0

Answer:

Both positive work and negative work have meaning: Positive work follows when the force has a component parallel to the displacement. Positive work adds energy to a system. Negative work follows when the force has a component opposite or against the displacement.

You might be interested in
A pendulum makes 40 vibrations in 20 seconds. calculate it's period?
DiKsa [7]

(20 seconds / 40 vibes) = (20/40) (seconds/vibe) =  0.5 second
3 0
4 years ago
Read 2 more answers
Based on the article “will the real atomic model please stand up?” Why did j.j. Thomson experiment with cathode ray tubes?
soldi70 [24.7K]

The answer is:  to determine that electric beams in cathode ray tubes were actually made of particles

I hope this helps!


3 0
4 years ago
Read 2 more answers
Where do the electrons that form the auroras enter the magnetosphere? a. Through holes c. At the equator b. Between the magnetic
marta [7]
I think the answer is d. In the magnetotail. I hope this helps! :)
7 0
4 years ago
Read 2 more answers
You are an employee of the city of Chicago. A city official declares that all cables holding traffic lights in the city should b
Irina18 [472]
  If you have ever lived in Chicago, then the answer might very well be C. 
Newton's Second law states F = ma. This problem has nothing to do with acceleration. 
Newton's Third law is the familiar action/reaction law. If the poles are anchored well enough and have a flexural strength greater than the tension exerted on them by the wire; then D is just.
That leaves B. There's no problem all we have to do is to increase the horizontal tension in the cable.
5 0
3 years ago
The temperature of one substance is 90 degrees F and another
valina [46]

Answer:

Substance that is 90 degrees will lose energy and the substance that is 50 degrees will gain energy

Explanation:

because that is how energy work duhhhhh

7 0
3 years ago
Other questions:
  • A power source supplies a prescribed voltage and is used to power a light bulb if another light bulb is connected in series to t
    8·2 answers
  • What phylum does a star fish belong to
    8·1 answer
  • In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how large wou
    5·2 answers
  • Which vector below goes from (0,0) to (1,-3)?
    7·2 answers
  • What is an example of an average main squence star?
    13·1 answer
  • Quarks
    8·1 answer
  • The mass of a proton is 1833 times larger than the mass of an electron. When a proton an electron interact with each other the o
    7·1 answer
  • Like magnetic poles will repel each other, while opposite magnetic poles will attract each other true or false
    8·1 answer
  • Explain how water erosion changes land forms
    11·1 answer
  • In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!