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Andrews [41]
3 years ago
10

When a boat is floating on a lake, the buoyant force on the boat is equal to:

Physics
2 answers:
Natali [406]3 years ago
8 0
The gravitational pull of the boat in the water 
vova2212 [387]3 years ago
8 0
The buoyant force on a floating object is equal to the object's weight.

So the vertical forces on the object are balanced.  That's a big part
of the reason why it's just sitting there and not accelerating up or down.
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Resistor is made of a very thin metal wire that is 3.2 mm long, with a diameter of 0.4 mm. What is the electric field inside thi
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Complete question:

Resistor is made of a very thin metal wire that is 3.2 mm long, with a diameter of 0.4 mm. What is the electric field inside this metal resistor? If the potential difference due to electric field between the two ends of the resistor is 10 V.

Answer:

The electric field inside this metal resistor is 3125 V/m

Explanation:

Given;

length of the wire, L = 3.2 mm = 3.2 x 10⁻³ m

diameter of the wire, d = 0.4 mm = 0.4 x 10⁻³ m

the potential difference due to electric field between the two ends of the resistor, V = 10 V

The electric field inside this metal resistor is given by;

ΔV = EL

where;

ΔV is change in electric potential

E = ΔV / L

E = 10 / (3.2 x 10⁻³ )

E = 3125 V/m

Therefore, the electric field inside this metal resistor is 3125 V/m

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