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stepan [7]
2 years ago
9

It urgent ! A simple circuit consists of an unknown voltage source and a single 35. 0 Ω resistor. If the current in the circuit

is measured to be 0. 257 A, what is the voltage in the circuit?
Physics
1 answer:
kaheart [24]2 years ago
8 0

Answer:

9 v

Explanation:

v = i r

v = .257 * 35 = ~ 9 v

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A watermelon is dropped off of a 50 ft bridge, and it explodes upon impact with the ground. How fast was it traveling in mph upo
Drupady [299]

Answer: 56.72 ft/s

Explanation:

Ok, initially we only have potential energy, that is equal to:

U =m*g*h

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h = 50ft and g = 32.17 ft/s^2

when the watermelon is near the ground, all the potential energy is transformed into kinetic energy, and the kinetic energy can be written as:

K = (1/2)*m*v^2

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we solve it for v.

v = √(2g*h) = √(2*32.17*50) ft/s = 56.72 ft/s

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Rudik [331]
The re<span>sistance of the second wire is 16 R.
where R is the resistance of the first wire.

R = </span>ρ\frac{l}{A}
where l = length of the wire
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A = \pi r^{2} where, r = \frac{diameter of wire}{2}

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