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
leonid [27]
2 years ago
15

Heat engines use heat to do work. true or false.

Physics
2 answers:
Dvinal [7]2 years ago
7 0
Heat engines transform heat energy to other type of energy, typically mechanical or electrical, so yeah, they use heat to work.

ankoles [38]2 years ago
4 0
True.

Heat engines makes use of heat to do work.
You might be interested in
Fiber optics are an important part of our modern internet. In these fibers, two different glasses are used to confine the light
motikmotik

Answer:

n_cladding = 1.4764

Explanation:

We are told that θ_max = 5 °

Thus;

θ_max + θ_c = 90°

θ_c = 90° - θ_max

θ_c = 90° - 5°

θ_c = 85°

Now, critical angle is given by;

θ_c = sin^(-1) (n_cladding/n_core)

sin θ_c = (n_cladding/n_core)

n_cladding = (n_core) × sin θ_c

Plugging in the relevant values, we have;

n_cladding = 1.482 × sin 85

n_cladding = 1.4764

7 0
3 years ago
A ball traveling at a speed ν0 rolls off a desk and lands at a horizontal distance x0 away from the desk, as shown in the figure
klasskru [66]

Answer:

3x_0

Explanation:

The horizontal distance covered by the ball in the falling is only determined by its horizontal motion - in fact, it is given by

d=v_x t

where

v_x is the horizontal velocity

t is the time of flight

The time of flight, instead, is only determined by the vertical motion of the ball: however, in this problem the vertical velocity is not changed (it is zero in both cases), so the time of flight remains the same.

In the first situation, the horizontal distance covered is

d=v_0 t = x_0

in the second case, the horizontal velocity is increased to

v_x' = 3v_0

And so the new distance travelled will be

d' = v_x' t = 3 v_0 t = 3 x_0

So, the distance increases linearly with the horizontal velocity.

5 0
3 years ago
PSYCHOLOGY. Which of the following statements does not describe a limitation of statistics?
WARRIOR [948]

Answer:

<em>A. Statistics addresses gaps in knowledge.</em>

Explanation:

The following statements that does not describe a limitation of statistics is <em>statistics addresses gaps in knowledge.</em>

6 0
2 years ago
Read 2 more answers
The brakes on a 15,680 N car exert a stopping force of 640 N.
Murrr4er [49]

Answer:

1568 Kg is the answer

Explanation:

6 0
3 years ago
The zone along the southern margins of the Sahara is called the
Jobisdone [24]
We have to choose the correct name for the zone along the southern margins of the Sahara. Laterite is a soil in hot and wet tropical areas. Savanna is the tropical grassland. It has tropical savanna climate. Veldt is name for the areas in the South Africa. Finally, the Sahel is the zone along the south margins of the Sahara. It has a semi-arid climate. The Arabic word "sahel" means "coast". Answer: C. Sahel. <span> </span>
7 0
3 years ago
Other questions:
  • A 50-g cube of ice, initially at 0.0°C, is dropped into 200 g of water in an 80-g aluminum container, both initially at 30°C.
    11·1 answer
  • An induced emf is produced inA. a closed loop of wire when it remains at rest in a nonuniform static magnetic field.B. a closed
    15·1 answer
  • The sound waves a bat releases hit an object and are_____ back to the bat.
    14·2 answers
  • Reduce, reuse, recycle! Soft drinks come in aluminum cans that are readily recycled. Storage of empty cans is never a problem, s
    5·2 answers
  • Which substance might lead to potentially addiction if abuse
    6·2 answers
  • Which of the following best describes chemical weathering?
    10·2 answers
  • I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER!<br><br> Fill in the blanks
    14·1 answer
  • Electric charges do not flow all the way through____________
    5·2 answers
  • Does water not have anomalous expansion?​
    15·2 answers
  • Any change in the cross section of the vocal tract shifts the individual formant frequencies, the direction of the shift dependi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!