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
satela [25.4K]
4 years ago
13

Thermal energy produced by friction cannot usually be used to do work. true/false

Physics
2 answers:
Dmitriy789 [7]4 years ago
7 0

Answer:

false

Explanation:

Work may be done in positive or negative direction. When a work is done in positive direction, it is called useful work, when work is done in negative direction, it is known as useless work. Any energy associated with friction produces useless work. That is, the work is done in negative direction.

Therefore, thermal energy produced by friction can be used to do work but in negative direction.

The correct option is false.

maria [59]4 years ago
4 0
I believe the correct response would be true, thermal energy or heat that is produced by friction usually cannot be used to do work.
You might be interested in
When Earth’s Northern Hemisphere is tilted toward the Sun during June, some would argue that the cause of our seasons is that th
Ludmilka [50]

Answer:

Distance of Earth from the Sun has nothing to do with the seasons only the tilt is responsible for the change in seasons.

Explanation:

The Earth's tilt does cause the seasons but the distance from the sun and has nothing to do with the change in seasons. In June, when the Northern Hemisphere is tilted in the direction of the Sun during the Northern Hemisphere summer the Earth is actually farthest from the Sun. In January, when the Southern Hemisphere is tilted in the direction of the Sun during the Northern Hemisphere winter the Earth is actually closest to the Sun. This is caused due to the elliptical orbit of the Earth. So, distance of Earth from the Sun has nothing to do with the seasons.

4 0
4 years ago
Since sound is a mechanical wave it needs a ...... to travel through
Leni [432]

Answer:

medium

Examples:

A medium is a thing that the sound wave would travel through, like sound waves traveling through air. A mechanical wave cannot travel without a medium, like if the wave were trying to travel through a vacuum.

6 0
3 years ago
Water will expand more than ___<br><br> A. door<br> B. juice<br> C. air
Snezhnost [94]
I think the answer is B because juice has a higher density than water
7 0
3 years ago
Read 2 more answers
A molecule that speed up a reaction
Diano4ka-milaya [45]

Answer:

I think it's a catalyst.

Explanation:

Definition: a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change

6 0
4 years ago
Read 2 more answers
Two movers are pushing a large crate with a force of 60.0 n each. one pushes north, the other east. what is the equilibrant forc
romanna [79]
To get the solution you must need to draw a force triangle. Attach the head of the 60N north force arrow with the tail of the 60N east force arrow. The subsequent is the arrow connecting he tail and head of the two arrows. 
You get a right angled triangle, and the resultant is (60^2 + 60^2) ^0.5 = 84.85 N or 85 N northeast.
8 0
3 years ago
Other questions:
  • A frog leaps up from the ground and lands on a step 0.1 m above the ground 2 s later. We want to find the vertical velocity of t
    12·2 answers
  • A system has 600 j of heat and does 300 j of work. What is the change in internal energy?
    7·1 answer
  • A pendulum has 297 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom o
    8·1 answer
  • What cardio kickboxing punch is similar to the rear-leg front kick
    9·1 answer
  • A quarter-wave monopole radio antenna (also called a Marconi antenna) consists of a long conductor of one quarter the length of
    5·1 answer
  • Which sentence describes the direction in which heat flows between any two objects?
    10·1 answer
  • Is the following atom an ion? 26 protons, 25 electrons, 28 neutrons<br><br> p.s. please help me
    6·1 answer
  • Which of the following BEST describes sports etiquette?
    12·1 answer
  • Piano tuners tune pianos by listening to the beats between the harmonics of two different strings. When properly tuned, the note
    13·1 answer
  • From the top of the leaning tower of Pisa, a steel ball is thrown vertically downwards with a speed of 3.00 m/s. if the height o
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!