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
faltersainse [42]
3 years ago
7

If the effects of heat and friction are ignored, the amount of work output is always _______ the amount of work input, even when

using a simple machine. A. the same as B. less than C. greater than D. It changes by situation.
Physics
1 answer:
jeka943 years ago
7 0
<h3><u>Answer;</u></h3>

Same as

<h3><u>Explanation;</u></h3>
  • If the effects of heat and friction are ignored, the amount of work output is always <u>same as</u> the amount of work input, even when using a simple machine.
  • Simple machines make work easier, but they do not decrease the amount of work one has to do.
  • A simple machine can change the amount of force applied to an object, and the distance over which the force is applied.
  • <em><u>The efficiency of simple machines is the ratio of work output to work input as a percentage. However, the efficiency is never 100% due to heat and friction. Therefore, if heat and friction then the efficiency would be 100% which means that the work input is equal to the work output.</u></em>
You might be interested in
1 2 3 4 5 6 7 8 9 10
7nadin3 [17]

Answer:

<h2>C. <u>0.55 m/s towards the right</u></h2>

Explanation:

Using the conservation of law of momentum which states that the sum of momentum of bodies before collision is equal to the sum of the bodies after collision.

Momentum = Mass (M) * Velocity(V)

BEFORE COLLISION

Momentum of 0.25kg body moving at 1.0m/s = 0.25*1 = 0.25kgm/s

Momentum of 0.15kg body moving at 0.0m/s(body at rest) = 0kgm/s

AFTER COLLISION

Momentum of 0.25kg body moving at x m/s = 0.25* x= 0.25x kgm/s

<u>x is the final velocity of the 0.25kg ball</u>

Momentum of 0.15kg body moving at 0.75m/s(body at rest) =

0.15 * 0.75kgm/s = 0.1125 kgm/s

Using the law of conservation of momentum;

0.25+0 = 0.25x + 0.1125

0.25x = 0.25-0.1125

0.25x = 0.1375

x = 0.1375/0.25

x = 0.55m/s

Since the 0.15 kg ball moves off to the right after collision, the 0.25 kg ball will move at <u>0.55 m/s towards the right</u>

<u></u>

4 0
3 years ago
When you look at a white light bulb through red sunglasses, why does the light look red to your eyes? What happened to all the o
Lelu [443]

Answer:

The answer is explained below in explanation

Explanation:

Whenever light falls on a colored surface, that color of light is reflected by the surface and all the other colors are absorbed. That is a black body appears black in all lights, because it absorbs every color and a white surface appears to be of the color of the light shone upon it because it is the mixture of all colors of light and reflects every color. The eyes only see the reflected light colors. The absorbed colors are not apparent to the eyes.

<u>Hence, when the white bulb is seen through red sunglasses, it does look like red to our eyes, while all the other colors are absorbed by the sun glasses.</u>

3 0
3 years ago
High-level clouds usually occur above 20,000 ft. Which is the best description of the clouds’ appearance?
PSYCHO15rus [73]
D. Thin and composed of Ice crystals
8 0
3 years ago
A wave in which particles of the medium move at right angles to the direction of the wave is called a
Licemer1 [7]

Answer:

transverse wave: A wave in which particles of the medium move at right angles to the direction of the wave is called a transverse wave.

5 0
3 years ago
Which type of compound is salt
Airida [17]
Sodium chloride or NaCl
5 0
3 years ago
Read 2 more answers
Other questions:
  • As the rate of radioactive decay becomes smaller, half-life becomes ____.
    12·1 answer
  • Tarzan swings on a 35.0 m long vine initially inclined at an angle of 44.0◦ with the vertical. The acceleration of gravity if 9.
    11·2 answers
  • An ice rescue team pulls a stranded hiker off a frozen lake by throwing him a rope and pulling him horizontally across the essen
    13·1 answer
  • So what would the answer for D be?
    15·1 answer
  • Which factor indicates the amount of charge on the source charge?
    10·1 answer
  • Explain why the wave model of light cannot explain the energy emissions from a blackbody
    15·1 answer
  • YO YO I NEED HELP!!!
    7·1 answer
  • A Or b <br> Question in picture
    6·2 answers
  • Who is corazon aquino? ​
    10·2 answers
  • Derive the dimension of coefficient of linear expansivity
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!