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Nadya [2.5K]
3 years ago
8

This parallel circuit has three resistors R1-120 ohm; R2-45 ohm: R3=360

Physics
1 answer:
Nina [5.8K]3 years ago
5 0

Answer:

the answer is 30 Ohms. Not found in the options provided

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I disagree.
Many substances show fluorescence under ULTRAVIOLET light, NOT microwaves. :)
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Are light waves longitudinal or transverse
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Answer:

Transverse

Explanation:

There are two types of waves, according to the direction of their oscillation:

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- Longitudinal waves: in a longitudinal wave, the direction of the oscillation is parallel to the direction of motion of the wave. Examples of longitudinal waves are sound waves.

Light waves corresponds to the visible part of the electromagnetic spectrum, which includes all the different types of electromagnetic waves (which consist of oscillations of electric and magnetic fields that are perpendicular to the direction of propagation of the wave): therefore, they are transverse waves.

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A visual display of data or information is a
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4 0
3 years ago
A bulldozer does 4,500 J of work to push a mound of soil to the top of a ramp that is 15 m high. The ramp is at an
Andreas93 [3]

Answer:

170 N

Explanation:

Given in the question that, work a bulldozer can do = 4500 J

<h3>Step 1</h3>

We will use trigonometry identity to find the distance bulldozer will travel up the hill

sin(35) = opp/hypo

sin(35) = 15/hypo

hypo = 15/sin(35)

hypo = 26.15m

<h3>Step 2</h3>

Formula to use

work done = force × distance

Plug values in the above formula

4500 = force x 26.15

force = 4500/26.15

force = 172.08

force ≈ 170 N

<h3 /><h3 /><h3 />

3 0
3 years ago
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The image shows the positions of a car on a roller coaster track. Arrange the cars in order based on their gravitational potenti
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Correct order, from lowest potential energy to highest potential energy:

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Explanation:

The gravitational potential energy of the car is given by:

U=mgh

where

m is the car's mass

g is the gravitational acceleration

h is the height of the car relative to the ground

In the formula, we see that m and g are constant, so the potential energy of the car depends only on its height above the ground, h. The higher the car from the ground, the larger its potential energy. Therefore, the position with least potential energy will be E, since the height is the minimum. Then, C will have more potential energy, because the car is at higher position, and so on: the position with greatest potential energy is A, because the height of the car is maximum.

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