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Ghella [55]
3 years ago
5

Why do you choose MCB in place of a fuse?

Physics
1 answer:
astraxan [27]3 years ago
3 0

It protects the electrical appliance and the person from electrical shocks/faults.

Hope it Helped!

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The diagram shows a heat engine. In which area of the diagram is unusable thermal energy detected?
Marat540 [252]
Nope, I disagree with the former answer. The answer is definitely Z. <u>W area</u> (boxed with red outline) is represented as the hot reservoir while <u>Z area</u> is the cold reservoir (boxed with blue outline). X area is the heat engine itself and Y area is the work produced from thermal energy from hot reservoir. Typically, all heat engines lose some heat to the environment (based from the second law of thermodynamics) that is symbolically illustrated by the lost energy in the cold reservoir. This lost thermal energy is basically the unusable thermal energy. The higher thermal energy lost, the less efficient your heat engine is. 
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3 years ago
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What is the difference in the speed of sound on a warm day versus on a cold day?
seraphim [82]
The sun is bright and when its cold there is no sun
4 0
3 years ago
An astronaut drops a rock from the top of a crater on the moon. When the rock is halfway down to the bottom of the crater, its s
Alexxx [7]

Answer: vf1/vf2= 1/ sqrt(2)

Explanation :on the moon no drag force so we have only the  force of gravity. aceleration is g(moon)= 1.62m/s2.the rest is basic kinematics

if the rock travels H to the bottom we can calculate velocity:

vo=0m/s (drops the rock)  , yo=0

vf*vf= vo*vo+2g(y-yo)

when the rock is halfway  y = H/2 so:

vf1*vf1=2*g*H/2 so vf1 = sqrt(gH)

when the rock reach the bottom y=H so:

vf2*vf2=2*g*H so vf2 = sqrt(2gH)

so vf1/vf2= 1/ sqrt(2)

good luck from colombia

8 0
3 years ago
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What happens when bromine reacts with carbon?
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D. Electrons are shared between the bromine atoms and carbon atoms
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If you comb your hair and the comb becomes negatively charged, your hair becomes?
slamgirl [31]

A positive charge cause dosent your hair static up when that happens or no?

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