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anyanavicka [17]

3 years ago

8

The voltage across a resistor is found to be 1.5 V. It is also found that there is a charge of 2 Coulombs passing through the re

sistor within 10 seconds. What is the value of the resistor in ohms

1 answer:

djverab [1.8K]3 years ago

8 0

Answer:

R = 7.5 Ω

Explanation:

If the resistor is in the linear zone of operation, the resistance must obey Ohm's Law:

$V = I*R (1)$

By definition, the current flowing through the resistor, is equal to the charge passing through the resistor, per unit time.
So, we can write the following expression for the current I:

$I =\frac{\Delta Q}{\Delta t} = \frac{2C}{10s} = 0.2 A (2)$

From (1) and (2) we can solve for R, as follows:

$R =\frac{V}{I} = \frac{1.5V}{0.2A} = 7.5 \Omega$

The value of the resistor is 7.5 Ω.

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xxMikexx [17]

Answer:

$a=3.34\ m/s^2$

Explanation:

<u>Accelerated Motion </u>

It refers to the motion of objects in which velocity is not constant over time. If the change of the velocity occurs at the same rate, then we say it's uniformly accelerated. Being $v_o$ = initial speed, $v_f$ = final speed, a= constant acceleration, x= distance traveled

Then, the scalar relation between them is

$v_f^2=v_o^2+2ax$

The aircraft needs to reach a liftoff speed of 53 m/s from rest (assumed) having only 420 meters to do so. We can compute the acceleration by solving for a

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$\boxed{a=3.34\ m/s^2}$

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2 years ago

If a force of 10 N acts on an object and an additional force of 6 N acts on the object in the same direction. What will be the n

Schach [20]

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Explanation: I hope this helped, although I'm not sure for the second one

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2 years ago

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While Sophia was driving to work, she tried to avoid hitting an animal and instead hit a parked car. As the car stopped, her bod

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This would be an illustration of Newton's first law of motion. Law of inertia, an object moving at constant velocity will keep moving at constant velocity until a force is acted upon it. Inertia is the tendency of an object to keep moving in a particular direction resisting to change, unless a force acts upon the object.

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3 years ago

What is the maximum value of the magnetic field at a<br> distance2.5m from a 100-W light bulb?

MA_775_DIABLO [31]

To solve this problem we will apply the concepts related to the intensity included as the power transferred per unit area, where the area is the perpendicular plane in the direction of energy propagation.

Since the propagation occurs in an area of spherical figure we will have to

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$I = \frac{P}{4\pi r^2}$

Replacing with the given power of the Bulb of 100W and the radius of 2.5m we have that

$I = \frac{100}{4\pi (2.5)^2}$

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$I = \frac{E_max^2}{2\mu_0 c}$

Here,

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Rearranging for the Maximum Energy and substituting we have then,

$E_{max}^2 = 2I\mu_0 c$

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