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vaieri [72.5K]
4 years ago
11

The image shows an infrared picture of a disc brake on a car after it has been driven and stopped. Heat is created when the brak

e pad comes in contact (rubbing) with the brake disc.
What causes the disc brake to heat up to almost 200°F ?

A)
bad tires


B)
friction


C)
solar energy


D)
electromagnetic energy

Physics
2 answers:
ahrayia [7]4 years ago
7 0

Answer:

b

Explanation:

Step2247 [10]4 years ago
4 0
B) friction causes the heat, but is also the force that stops the car from crashing!
The pads, disc, drum, etc. of the brake system are designed to absorb most of the heat produced from the friction of braking.
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Answer:

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3 years ago
To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V
aleksley [76]

Answer:

The maximum energy stored in the combination is 0.0466Joules

Explanation:

The question is incomplete. Here is the complete question.

Three capacitors C1-11.7 μF, C2 21.0 μF, and C3 = 28.8 μF are connected in series. To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V. Determine the maximum energy stored in the series combination.

Energy stored in a capacitor is expressed as E = 1/2CtV² where

Ct is the total effective capacitance

V is the supply voltage

Since the capacitors are connected in series.

1/Ct = 1/C1+1/C2+1/C3

Given C1 = 11.7 μF, C2 = 21.0 μF, and C3 = 28.8 μF

1/Ct = 1/11.7 + 1/21.0 + 1/28.8

1/Ct = 0.0855+0.0476+0.0347

1/Ct = 0.1678

Ct = 1/0.1678

Ct = 5.96μF

Ct = 5.96×10^-6F

Since V = 125V

E = 1/2(5.96×10^-6)(125)²

E = 0.0466Joules

8 0
3 years ago
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tankabanditka [31]
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3 years ago
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Explanation:

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Law Incorporation [45]

Answer:

The force acting on a body is always equal to the product of the mass of the body and its acceleration.

Explanation:

The force of a body is defined as the product of mass and acceleration of the body.

According to Newton's second law, wherever there is a change in momentum of the body for an interval of time, there is a force acting on it.

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                              = m a

Where,

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Hence, the equation for the force for any body becomes, F = m x a

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