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
defon
2 years ago
15

you read about a rope and pulley machine that was able to produce equal amounts of output work and input work.was this a realist

ic example? why or why not?
Physics
2 answers:
NISA [10]2 years ago
4 0

Answer:

No, it isn’t a realistic example.

Explanation:

This is an example of an ideal scenarios when we ignore frictional losses. But, in real life there are frictional losses and tension on the both sides of the pulley will be different. So, we cannot get output work is equal to input work. Hence, it is not a realistic example but ideal one.

Flura [38]2 years ago
3 0
<span>nope.
It is non realistic example it is the ideal one (reversible machine).
Because you have friction loss and heat which would decrease the output work.</span>
You might be interested in
I can use everything on my body to advance the ball but what?
ddd [48]
The answer would be hands! hope this helps
5 0
2 years ago
What pushes against gravity in: a main sequence star, a white dwarf, a neutron star, and a black hole? electron degeneracy, neut
Inga [223]

Answer:

heat pressure, electron degeneracy, neutron degeneracy, and nothing

Explanation:

Main Sequence Star: It is a star in which nuclear fusion is happening in the core of the star. Hydrogen molecules fuse together to generate Helium. This nuclear fusion generates outward gas pressure and radiation pressure which balances the inward gravity thus creating an equilibrium which keeps the stars in shape.

White dwarf: It is the end stage of a medium sized star like the Sun. Outer layers of the star are thrown in the form a shell/bubble leaving a small and dense core in the center called as white dwarf. This core consists of carbon and oxygen. Nuclear fusion doesn't occur in the core of white dwarfs. The inward gravity is balanced by the electron degeneracy pressure. Thus these stars will keep on radiating the remaining heat and will turn in to a black dwarf at the end.

Neutron Star: This is the end stage of a supermassive star (1-3 times the mass of the Sun). At the last stage of the life the core collapses. In these stars the inward gravity is so huge that the pressure overcomes the electron degeneracy pressure and crushes together the electron and proton to form neutron. The neutron then stops the collapse and balances the inward gravity.

Black Hole: This is the end stage of a hyper massive stars weighing more than 3 times the mass of the Sun. The inward gravitational force is so huge that even the neutrons are not able to stop the collapse the core. thus the mass of the star collapses into a very small area of immense gravity. There is nothing that can balance this inward gravity.

3 0
2 years ago
when we turn on a light switch or use the microwave, we use electricity. what are common sources or our electricity?
blagie [28]

Answer:

solar, wind, hydro, natural resources

4 0
3 years ago
When you need to pass a motorcycle, _____________.A. move into the left lane to pass the motorcycle B. pass to the left using th
erma4kov [3.2K]

Answer:

A) move into the left lane to pass the motorcycle

Explanation:

According to law, when it is needed to pass other vehicles, it requires you to only pass other vehicles on the left (using the left lane).  

When passing a motorcyclist, remember to give him/her the same full lane width as other vehicles. Never drive in the same lane with a motorcyclist, even if the lane is wide enough to fit your vehicle and the motorcyclist.

5 0
3 years ago
Which of The following are classiFcatons describing how rock and oTher maTerial movedownslope?a. Fall, b. slide, c. slump, d. cr
nlexa [21]

Answer:

correct answer is Fall slide, slump, creep, flow

Explanation:

solution

we know that Movement of particle under the influence of gravity

so rock and other material move down as gravity.

first rock particle fall down because falls occur very rapidly with high slope after that they slide on the slope and after sliding they slump and it occurs when the rupture surface is curved after slump process they creep.  

after creeping, it can flow particle as it occurs slowly with the low slope with water.

so correct answer is Fall slide, slump, creep, flow

7 0
3 years ago
Other questions:
  • A spinning ice skater on extremely smooth ice is able to control the rate at which she rotates by pulling in her arms. Which of
    9·1 answer
  • a 4kg block is attatched to a vertical sspring constant 800n/m. the spring stretches 5cm down. how much elastic potential energy
    11·1 answer
  • Keaton is asked to solve the following physics problem:
    6·1 answer
  • a croquet ball, after being hit by a mallet,slows down and stops. do the velocity and acceleration of the ball have the same sig
    12·1 answer
  • A 2.0-kg cart collides with a 1.0-kg cart that is initially at rest on a low-friction track. After the collision, the 1.0-kg car
    11·1 answer
  • So whats the answer for this question nobody not telling me
    5·2 answers
  • The era of planet formation ended when the remaining hydrogen and helium gas of the solar nebula was swept into interstellar spa
    6·1 answer
  • The inner transition metals include the
    5·1 answer
  • Which sentence describes Newton's third law?
    11·1 answer
  • Is the process of science described in this lesson similar to your initial ideas about how science is carried out? Explain why o
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!