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crimeas [40]
2 years ago
15

Which vector shows the velocity of the yo-yo at this moment?

Physics
1 answer:
Helga [31]2 years ago
6 0

The vector which shows the velocity of the yo-yo at this moment is A and is denoted as option A.

<h3>What is Velocity?</h3>

This is referred to the rate of change of distance with time and the unit is metre per seconds.

A shows the direction of motion is same as the direction of velocity and is the tangent at that particular point hence why it was chosen as the most appropriate choice.

Read more about Velocity here brainly.com/question/6504879

#SPJ1

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The food calorie, equal to 4186 J, is a measure of how much energy is released when food is metabolized by the body. A certain b
rewona [7]

Answer:

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Explanation:

Let's first find out how much energy the hiker gets from 150 food calories.

This is:

Energy = 150 * 4186

Energy = 627.9 kJ

To burn all of this off, we set it equal to the gravitational potential energy, and then solve for the height.

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5 0
3 years ago
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zimovet [89]

Answer:

Work done is zero

Explanation:

given data

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WE KNOW THAT

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DISTANCE = 0 as boy stands still. therefore

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3 0
3 years ago
Since many wavelengths of light are measured in nanometers, it's useful to know that planck's constant (h) multiplied with the s
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Answer:

E = h f      and since f = c / λ     we have E = h c / λ

Thus  λ = h c / E

Also, 1 ev = 1.6E-19 C

λ = 6.63E-34 * 3.0E8 / (1.6 * 1.6E-19)

λ = 6.63 * 3.0 / (1.6 * 1.6) * E-7

λ = 7.77E-7 = 777 nanometers

(B) is correct

4 0
2 years ago
Which of the following is a small star that has reached the end of its stellar evolution?
Akimi4 [234]
D.) White Dwarf

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Hope this helps!
3 0
3 years ago
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Alenkinab [10]
Earth's HYDROLOGIC cycle moves water from one reservoir to another.
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3 years ago
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