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artcher [175]
3 years ago
6

If the voltage and resistance in a circuit both double, what happens to the current? use ohm’s law to explain your answer.

Physics
1 answer:
Allisa [31]3 years ago
4 0

One form of Ohm's law says:

                           Current  =  (voltage) / (resistance)

The voltage and resistance are the numerator and denominator
of the same fraction.  So if both of them double, the value of the
fraction doesn't change.

Nothing happens to the current.  It doesn't change.
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The average period of pendulum clock is found to be 1.2s at sea level. The period of the same pendulum on a mountain top is foun
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Answer:

g' = 10.12m/s^2

Explanation:

In order to calculate the acceleration due to gravity at the top of the mountain, you first calculate the length of the pendulum, by using the information about the period at the sea level.

You use the following formula:

T=2\pi \sqrt{\frac{l}{g}}         (1)

l: length of the pendulum = ?

g: acceleration due to gravity at sea level = 9.79m/s^2

T: period of the pendulum at sea level = 1.2s

You solve for l in the equation (1):

l=\frac{gT^2}{4\pi^2}\\\\l=\frac{(9.79m/s^2)(1.2s)^2}{4\pi^2}=0.35m

Next, you use the information about the length of the pendulum and the period at the top of the mountain, to calculate the acceleration due to gravity in such a place:

T'=2\pi \sqrt{\frac{l}{g'}}\\\\g'=\frac{4\pi^2l}{T'^2}

g': acceleration due to gravity at the top of the mountain

T': new period of the pendulum

g'=\frac{4\pi^2(0.35m)}{(1.18s)^2}=10.12\frac{m}{s^2}

The acceleration due to gravity at the top of the mountain is 10.12m/s^2

5 0
3 years ago
Suppose the initial position of an object is zero, the starting velocity is 3 m/s and the final velocity was 10 m/s. The object
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Explanation:

We have,

The initial position of an object is zero.

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Answer:

This can be the FBD of the bag.

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Explanation:

We'll need two equations.

v² = v₀² + 2a(x - x₀)

where v is the final velocity, v₀ is the initial velocity, a is the acceleration, x is the final position, and x₀ is the initial position.

x = x₀ + ½ (v + v₀)t

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Given:

v = 47.5 m/s

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40100 = ½ (47.5 + 34.3)t

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