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tiny-mole [99]
3 years ago
10

a car's engine is only 12 % efficient at converting chemical energy in gasoline to mechanical energy. If it takes 18000 N of for

ce to keep the car moving at a constant speed of 21 m/s, how much chemical energy would be needed to move the car a distance of 450m at this speed?
Physics
1 answer:
Georgia [21]3 years ago
6 0
I wish i could help but idk the answer

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g If the interaction of a particle with its environment restricts the particle to a finite region of space, the result is the qu
Travka [436]

Answer:

the result is the quantization of __Energy__ of the particle

Explanation:

3 0
4 years ago
A circuit has a voltage drop of 60.0 V across a 120.0 resistor that carries a current of 0.500 A. What is the power conducted by
olasank [31]

Answer:

Power, P = 30 W

Explanation:

We have,

Voltage drop of a circuit is 60 V

Resistance of the resistor is 120 ohms

Current across the circuit is 0.5 A

It is required to find the power conducted by the resistor. Power conducted by a resistor is given by :

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P=60\times 0.5\\\\P=30\ W

So, the power conducted by the resistor is 30 watts.

3 0
3 years ago
Is a process that modifies light waves so they vibrate in a single plane
madam [21]

The process you're fishing for is "polarization", but that's a

misleading description.

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The intensity of a light beam is always reduced after

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8 0
4 years ago
A thin electrical heating element provides a uniform heat flux qo" to the outer surface of a duct through which air flows. The d
Ivanshal [37]

Answer:

a)q= 2800 W/m²

b)To=59.4°C

Explanation:

Given that

L = 10 mm

K= 20 W/m·K

T=30°C

h= 100 W/m²K

Ti=58°C

a)

Heat flux q

q= h ΔT

q= 100 x (58 - 30 )

q= 2800 W/m²

b)

As we know that heat transfer by Fourier law given as

Q= K A ΔT/L

Lets take outer temperature is To

So by  Fourier law

To= Ti + qL/K

Now by putting the values

To= Ti + qL/K

To= 58 + 2800 \times \dfrac{ 0.01}{20}

To=59.4°C

5 0
3 years ago
An ideal gas at 27°C is contained in a piston that ensures that its pressure will always be constant. Raising the tem- perature
zlopas [31]

Answer:

T = 600K

Explanation:

See attachment below.

7 0
4 years ago
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