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Ksivusya [100]
3 years ago
13

What feature of a planet's orbit does Kelper's first law of motion describe?

Physics
1 answer:
IRISSAK [1]3 years ago
5 0
The answer is going to be letter B
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A Carnot engine has an efficiency of 83.0% and performs 4500 J of work every cycle. How much energy is discharged to the lower t
ololo11 [35]

We will start by finding the heat in state one through the thermal efficiency or efficiency of a thermal machine is a coefficient or dimensionless ratio calculated as the ratio of the energy produced (in an operating cycle) and the energy supplied to the machine. Mathematically it is the relationship between the work generated and the heat emanated.

So,

\eta = \frac{W}{Q_1} \rightarrow Q_1 = \frac{W}{\eta}

Q_1 = \frac{4500}{0.83}

Q_1 = 5421J

The total change of energy is equivalent to 4500J and this is equal by conservation of energy to the total change in heat. So:

W = \Delta Q

W = Q_1-Q_2

4500 = 5421- Q_2

Q_2 = 921.68 J

Therefore the energy which is discharged to the lower temperature reservoir every cicle is 921.7J

6 0
3 years ago
True or false questions for work and power.​
dalvyx [7]

Answer:

lo escribes en español?

Explanation:

no hablo ingles

5 0
3 years ago
A grandfather clock works by swinging a pendulum back and forth with a
allochka39001 [22]

Answer:

For example, a wave with a time period of 2 seconds has a frequency of

1 ÷ 2 = 0.5 Hz.

Explanation:

8 0
3 years ago
the force between your feet and the floor is greater while standing on your tiptoes than while standing flat on your feet
Elodia [21]
Yes thats correct....becuase all of your weight is concentrated on a small area compared to the larger surface area of your feet!
is that what your question was?
4 0
3 years ago
Read 2 more answers
Ceres, Pluto, and Eris are all round in shape and classified as:_________ A) Leftover planetesimals that formed inside the frost
motikmotik

Answer

Ceres, Pluto, and Eris are classified as DWARF PLANET.

A) Leftover planetesimals inside the frost line are known as ASTEROIDS.

B) METEORITES are the pieces of Asteroids which are fallen on the earth's surface.                                                

C) COMETS are the objects which are visible with long tails.            

D) COMETS are also the leftover planetesimals that are occupied by the jovian planets and are formed in the solar system.                

E) Meteor showers are associated with debris from COMETS                      

5 0
3 years ago
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