3 years ago

You can analogize the photoelectric energy to

1 answer:

5 0

Answer:

a useful sporting analogy ... Teachers of science routinely use analogies to help ... balls over the bar and you will probably find that.

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What is the mass of an object moving at a speed of 10.0 m/s with a kinetic energy of 760 J?

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Explanation:

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2 years ago

How much thermal energy is created when a 3000 kg suv brakes to a stop from 20 m/s on a level road?

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Answer:

b. 600,000 J

Explanation:

Applying the law of conservation of energy,

The thermal energy created = Kinetic energy of the suv.

Q' = 1/2(mv²)............... Equation 1

Where Q' = Thermal energy, m = mass of the suv, v = velocity of the suv.

From the question,

Given: m = 3000 kg, v = 20 m/s

Substitute these values into equation 1

Q' = 1/2(3000×20²)

Q' = 600000 J

Hence the right option is b. 600,000 J

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3 years ago

Explain What determines the amount of<br> chemical energy a substance has?

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The kinds of atoms in the substance and their arrangements

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3 years ago

Immature forms of many animals, like Guinea worms, before they morph into adults

liberstina [14]

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True

Explanation: If this is a true or false question it is *T*

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3 years ago

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A new roller coaster contains a loop-the-loop in which the car and rider are completely upside down. If the radius of the loop i

levacccp [35]

Answer:

The minimum speed must the car must be 13.13 m/s.

Explanation:

The radius of the loop is 17.6 m. We need to find the minimum speed must the car traverse the loop so that the rider does not fall out while upside down at the top.

We know that, mg be the weight of car and rider, which is equal to the centripetal force.

$mg = \dfrac{mv^2}{r}\\v = \sqrt{rg}\\v = \sqrt{17.6\times 9.8}\\v = 13.13\ m/s\\$

So, the minimum speed must the car must be 13.13 m/s.

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2 years ago