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sergiy2304 [10]
3 years ago
6

Match each example to its type of energy.

Physics
1 answer:
PtichkaEL [24]3 years ago
6 0
Solar energy - A

nuclear energy - B

fossil fuel energy - C

wind energy - D

geothermal energy - E

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How long would it take for a car to travel 200 km if it has an average speed of 55 km hr?
Rainbow [258]

Answer:

3.63 hours or 3 and 37.5 minutes

Explanation:

200/55

Hope this helps :)

6 0
3 years ago
A particular car engine operates between temperatures of 440°C (inside the cylinders of the engine) and 20°C (the temperature of
Step2247 [10]

One of the concepts to be used to solve this problem is that of thermal efficiency, that is, that coefficient or dimensionless ratio calculated as the ratio of the energy produced and the energy supplied to the machine.

From the temperature the value is given as

\eta = 1-\frac{T_L}{T_H}

Where,

T_L = Cold focus temperature

T_H = Hot spot temperature

Our values are given as,

T_L = 20\° C = (20+273) K = 293 K

T_H = 440\° C = (440+273) K = 713 K

Replacing we have,

\eta = 1-\frac{T_L}{T_H}

\eta = 1-\frac{293}{713}

\eta = 0.589

Therefore the maximum possible efficiency the car can have is 58.9%

4 0
2 years ago
Plz, Help!!
SIZIF [17.4K]
C is the first & the second question is A
7 0
2 years ago
Read 2 more answers
If you use a force of 90 N to pick up a 10 pound bag of charcoal, what is the acceleration?
hjlf

Answer:

9ms^2

Explanation:

since ,Force=mass*acceleration

then, acceleration=force/mass

and, Force=90N

Mass=10pound

therefore, acceleration=90/10

=9ms^2

8 0
3 years ago
Kim took 5 hours to complete a journey with an average speed
monitta

Answer:110

Explanation:

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