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
What causes the disc brake to heat up to almost 200°F ?
A)
bad tires
B)
friction
C)
solar energy
D)
electromagnetic energy
2 answers:
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Answer:
The x-component of the electric field at the origin = -11.74 N/C.
The y-component of the electric field at the origin = 97.41 N/C.
Explanation:
<u>Given:</u>
- Charge on first charged particle,
- Charge on the second charged particle,
- Position of the first charge =
- Position of the second charge =
The electric field at a point due to a charge at a point
distance away is given by
where,
= Coulomb's constant, having value
= position vector of the point where the electric field is to be found with respect to the position of the charge
.
= unit vector along
The electric field at the origin due to first charge is given by
is the position vector of the origin with respect to the position of the first charge.
Assuming, are the units vectors along x and y axes respectively.
Using these values,
The electric field at the origin due to the second charge is given by
is the position vector of the origin with respect to the position of the second charge.
Using these values,
The net electric field at the origin due to both the charges is given by
Thus,
x-component of the electric field at the origin = -11.74 N/C.
y-component of the electric field at the origin = 97.41 N/C.