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ch4aika [34]
3 years ago
15

Which is an example of speed?​

Physics
1 answer:
Sauron [17]3 years ago
3 0

Answer:

Definition: Speed is a way of measuring how quickly something is moving or being done, or something moving fast. An example of speed is a car being driven 45 miles per hour. An example of speed is someone cleaning a room in 10 minutes. An example of speed is how quickly a jaguar runs.

Explanation:

You didnt give examples so i just gave the definition :)

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What is the formula for mechanical advantage?
Sladkaya [172]

Answer:

A. MA=force output/force input

Explanation:

mechanical advantage is the ratio of the load to the effort

8 0
3 years ago
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Suppose the battery in a clock wears out after moving thousand coulombs of charge through the clock at a rate of 0.5 Ma how long
Ksivusya [100]

Answer:

Hello your question is poorly written below is the complete question

Suppose the battery in a clock wears out after moving Ten thousand coulombs of charge through the clock at a rate of 0.5 Ma how long did the clock run on does battery and how many electrons per second slowed?

answer :

a) 231.48 days

b) n = 3.125 * 10^15

Explanation:

Battery moved 10,000 coulombs

current rate = 0.5 mA

<u>A) Determine how long the clock run on the battery. use the relation below</u>

q = i * t ----- ( 1 )

q = charge , i = current , t = time

10000 = 0.5 * 10^-3 * t

hence  t = 2 * 10^7 secs

hence the time = 231.48  days

<u>B) Determine how many electrons per second flowed </u>

q = n*e ------ ( 2 )

n = number of electrons

e = 1.6 * 10^-19

q = 0.5 * 10^-3 coulomb ( charge flowing per electron )

back to equation 2

n ( number of electrons ) = q / e = ( 0.5 * 10^-3 ) / ( 1.6 * 10^-19 )

hence : n = 3.125 * 10^15

8 0
2 years ago
18. The orbits of planets being elliptical was one the planetary laws developed by
TEA [102]
It was a man named <span>Johannes Kepler. </span>
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A book is pushed and released and it slides across a table for a short distance. The book quickly comes to a stop. The book orig
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a the kinetic energy is transformed into heat

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2 years ago
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Any help with these? I’ve tried to answer some but I’m really confused.
Eva8 [605]

Top left: The slope of the line gives the (constant) acceleration of the moving object because the plot describes the velocity of some moving object. It's hard to tell what points the line passes through in the picture you took, but whatever slope/acceleration you find, that value will stay the same regardless of the time.

Top middle: The slope of the line is negative, which means acceleration has a negative sign. And because the line describes velocity over time, the fact that velocity is linear means that acceleration is constant.

Top right: The acceleration is the slope of the tangent line to the parabola at t=10. You can visually confirm that the slope of this line would be positive. Now, the average velocity between t=10 and t=11 is

\bar a=\dfrac{v(11)-v(10)}{11-10}\approx16-14=2

Judging by the plot, 2\,\dfrac{\mathrm m}{\mathrm s^2} seems like a pretty reasonable choice among the answers.

Bottom left: The slope of the tangent line at any point on the plot would be negative. Because velocity is non-linear, a will not be constant.

Bottom middle: Opposite situation as in [bottom left].

Bottom right: The acceleration can only be negative for t, which means t=2\,\mathrm s must be the correct answer.

7 0
3 years ago
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