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stepan [7]
3 years ago
15

A battery supplies 0.71 A to three resistors connected in parallel. The current through the first resistor is 0.27 A and the cur

rent through the second resistor is 0.24 A. What is the exact current (in A) through the third resistor
Physics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

0.2 A

Explanation:

Current: This is the rate of flow of charge in a circuit. The S.I unit of charge is Ampere (A).

Note: When resistors are connected in parallel, the total current is equal to the sum of the individual current in each resistor.

It = I1 + I2 + I3......................... Equation 1

Where,

It = Total current, I1 = current in the first resistor, I2 = current in the second resistor, I3 = current in the third resistor.

Given: It = 0.71 A, I1 = 0.27 A, I2 = 0.24 A.

Substitute into equation 1

0.71 = 0.27+0.24+I3

0.71 = 0.51+I3

I3 = 0.2 A.

Hence the current through the third resistor = 0.2 A

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I believe the correct answer is kinetic energy.

We know that kinetic energy is the movement of any object, no matter its size.

Mechanical energy is a type of kinetic energy, which involves the movement of larger objects.

I hope I helped!

If you need a more thorough explanation, don't hesitate to message me or leave a comment down below.

Here's a video that explains energy:

https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/work-and-energy-part-2?modal=1

5 0
3 years ago
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When a beam of light is incident on a surface, it delivers energy to the surface. The intensity of the beam is defined as the en
scoundrel [369]

Answer:

Kg

Explanation:

Given that the definition of intensity is:

The intensity of the beam is defined as the energy delivered per unit area per unit time. That is,

I =( E × t)/A

Which can expressed as

I = J/m^2/s

The S.I Units of

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Area A = m^2

Time t = s

Intensity I = kgm^2s^-1 × m^-2 × s

Intensity I = kg

The cubic metres and seconds are cancelled out

Therefore, the S.I units of intensity is kg

6 0
3 years ago
Before the widespread use of computers, how was the epicenter of an earthquake determined?
Nezavi [6.7K]
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it is called triangulation 
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You are 1.8 m tall and stand 2.8 m from a plane mirror that extends vertically upward from the floor. on the floor 1 m in front
velikii [3]
This problem must be solved using a sketch. I attached an illustration of the problem.
You must trace the ray that reflects from the top off the table to your eyes. This how eyesight works, light rays reflects off the objects into your eyes.
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Now we can write tangens equations:
tan(\theta)=\frac{h-0.8}{1}\\
tan(\theta)=\frac{1.8-h}{2.8}\\
\frac{h-0.8}{1}=\frac{1.8-h}{2.8}
We solve for h:
\frac{h-0.8}{1}=\frac{1.8-h}{2.8}\\
2.8h-0.8\cdot 2.8=1.8-h\\
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Answer:

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