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sashaice [31]
3 years ago
8

Tech A says quartz crystals under mechanical stress will produce a voltage. Tech B says the piezoelectric principle is used in c

oolant temp sensors. Who is correct?
Physics
1 answer:
pshichka [43]3 years ago
3 0

Answer:

Tech A is right.

Explanation:

Its the ability of quartz crystal that if we apply a mechanical stress on them by an applied force then they can produce the electricity or voltage. This phenomenon of producing electricity by squeezing a crystal is termed as piezoelectricity or a piezoelectric effect.

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Three Carnot engines operate between the following temperature limits.
Kipish [7]

Answer:c>a>b

Explanation:

Given

All the engine extracts same amount of heat(Q) from High-temperature reservoir

For a) 400 and 500 K

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

\eta _{engine}=\frac{work\ supplied}{heat\ supplied}

1-\frac{400}{500}=\frac{W_a}{Q}

W_a=\frac{Q}{5}

For b)500 K and 600K

1-\frac{500}{600}=\frac{W_b}{Q}

W-b=\frac{Q}{6}

For c) 400 K and 600 K

1-\frac{400}{600}=\frac{W_c}{Q}

W_c=\frac{2Q}{3}

So c will give the highest amount of work

c>a>b

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3 years ago
A 0.1ohm resistor has power rating 5w. is the resistor safe when conducting a current of 10A.​
astra-53 [7]

Answer:

1.5 Amp is rated for 5 W so it would not be possible

7 0
3 years ago
An objects speed is 2.40 m/s, and its momentum is 120.0 kg m/s. what is the mass of the object?
jarptica [38.1K]
Momentum is defined as 

P = m*v

where m is the mass of the object
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The mass is 50 kg
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How much weight is generated by an 80 kg person on planet earth? On the moon?
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It will be 133 on the moon
8 0
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Can you please solve this for me urgently want to make sure if my answers are correct?
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