What temperature is required to transfer waste heat to the environment for a heat engine to be 100% efficient?

Answers

Answer 1

Answer:

It is not possible for a heat engine to be 100% efficient. The Laws of Thermodynamics explicitly explains that you can never transfer heat perfectly simply because during the flow of heat (either at low or high temperature) some of the initial input heat have been transformed into work.

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What is the temperature 32 degrees Fahrenheit in degrees Celsius?a. 20 degrees Celsius
b. 0 degrees Celsius
c. 10 degrees Celsius
d. 10 degrees Celsius

Answers

Using    (F - 32)/9 = C/5
Where F is Fahrenheit, C = Celsius.

Let F = 32, (32 - 32)/9 = C/5
   0/9 = C/5
      0 = C/5, therefore C = 0*5 = 0

32°F = 0°C

Answer:so that means the answer 32°F = 0°C

Explanation:

Using (F - 32)/9 = C/5

Where F is Fahrenheit, C = Celsius.

Let F = 32, (32 - 32)/9 = C/5

0/9 = C/5

0 = C/5, therefore C = 0*5 = 0

32°F = 0°C

Two technicians are discussing testing MAP sensors. Technician A says that the MAP sensor should be replaced if anything comes out of the sensor when the vacuum hose is removed from the sensor. Technician B says that the injector pulse width should increase when vacuum to the MAP sensor is increased. Which technician is correct?a.Technician A onlyb.Technician B onlyc.Both Technicians A and Bd.Neither Technician A nor B

Answers

The statements from both Technicians A and B are correct.

Answer: Option C

Explanation:

A typical MAP sensors comprises with a ceramic or silicon wafers, sealed with an ideal vacuum on one side and a suction manifold on the other. When the engine (motor) vacuum varies, the differential pressure across the board changes the output voltage or frequency to the MAP sensor. So, sensor vacuum to be increased if injection pulse widths increase.

Most pressure sensors operate at 5 volts from a computer and return a signal (voltage or frequency) based on the pressure applied to the sensor (vacuum). When testing the MAP sensor, make sure that the vacuum hose and hose connections are tightly connected to the engine vacuum source. According to this, concluding that the statements from both technicians are correct.

What does E=MC5, do you think einstein was correct or wrong,

Answers

Einstein's famous equation has a 2 in it, not a 5. It makes no difference what you, I, or anyone else 'thinks'. That equation has been proven correct in hundreds of experiments and thousands of observations and measurements since it was published. Among other things, it happens to be the reason why the sun shines.

What light is NOT in the visible light spectrum

Answers

if you mean with the visible eye, then its radiation. we cant see radiation.
get a little more detail about the question.

Answer:

radio waves microwaves x-rays gamma rays

Explanation

4. List 3 detailed examples of Newton's 3rd Law.

Answers

Answer: If one billiard ball hits another, the second will move with the same force as the first.

A child wants to jump to climb a tree (reaction), he must push the ground to propel himself (action).

A man deflates a balloon; the force with which the air comes out causes the balloon to move from one side to the other.

Explanation:

-Hitting A Wall

-Rowing a boat

-Walking

Explanation:

1.If you hit a Wall with your hands or legs, you get hurt. Why?

Because of Newton's Third Law. You hit the wall with a force and that exact same amount of force is returned by the wall.

2. While Rowing a boat, when you want to move forward on a boat, you paddle by pushing the water backwards, causing you to move forward.

3.While Walking, You push the floor or the surface you are walking on with your toes, And the surface pushes your legs up, helping you to lift your legs up.

The process in which a substance changes from a gaseous state to the liquid state is A. critical temperature.
B. absolute zero.
C. evaporation.
D. condensation.

Answers

This process is called D. Condensation.

You can easily notice this happen on Air conditioning devices, where the cold gaseous air is turned into water that drips from the air conditioning unit due to condensation.

By definition we have to:

In physics, condensation is a change of state by which a substance passes from a gaseous state to a liquid state.

For example, in a refrigeration cycle, the refrigerant leaves the compressor in the gaseous state, from here, it enters the condenser, a state change called condensation occurs and the refrigerant leaves in liquid form. This process is useful in air conditioners.

Answer:

The process in which a substance changes from a gaseous state to the liquid state is:

D. condensation.

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