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Mademuasel [1]
3 years ago
7

A motor with an operating resistance of 32 ohms is connected to a voltage source. the current in the circuit is 3.8

Physics
1 answer:
Phantasy [73]3 years ago
5 0

V = I · R = (3.8 Amperes) · (32 ohms) = 121.6 volts
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Starting from rest, a 5.00 kg steel sphere rolls down a frictionless ramp with a height of 4.00 m. What is the sphere's speed wh
elena-14-01-66 [18.8K]

Answer:

8.85437 m/s

Explanation:

m = Mass of sphere = 5 kg

h = Vertical height = 4 m

g = Acceleration due to gravity = 9.80 m/s²

Applying conservation of energy we get

\dfrac{1}{2}mv^2=mgh

\\\Rightarrow v=\sqrt{2gh}

\\\Rightarrow v=\sqrt{2\times 9.8\times 4}

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The sphere's speed when it reaches the bottom of the ramp is 8.85437 m/s

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Question 11 (1 point)
Ainat [17]

Answer:

gravitational potential energy.

Explanation:

Gravitational potential energy (GPE) can be defined as an energy possessed by an object or body due to its position above the earth surface.

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G.P.E = mgh

Where,

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h represents the height measured in meters.

This ultimately implies that, anytime there is height, the object must have gravitational potential energy.

Hence, an object possesses gravitational potential energy due to its height (position) and the earth's gravitational force.

8 0
2 years ago
Why is a flower not a good blackbody radiator?
artcher [175]

Answer:

The answer is O C. A flower absorbs most of the light that hits it.

Explanation:

  • <u><em> blackbody radiator is defined as an object that absorbs all electromagnetic radiation that falls on it at all frequencies over all angles of incidence.</em></u>
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1 year ago
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Answer:

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Given:

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Substitute the given values to the equation:

3 + (4)(7)

3 + 28

31

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3 years ago
When the temperature of air rises, the amount of water needed for saturation
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It Increases. I just took a quiz with the same question.
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3 years ago
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