3 years ago

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Physics

1 answer:

goldenfox [79]3 years ago

8 0

Answer:

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Explanation:

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A coin is dropped from a height of 188 meters. Neglecting air resistance, how much time (in seconds) was the coin in the air?

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Answer:

$t=6.19s$

Explanation:

With a initial velocity is zero, kinematics equation is:

$y=1/2*g*t^2$

$t=\sqrt{2y/g}=\sqrt{2*188/9.81}=6.19s$

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3 years ago

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Answer: 9/10

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Answer:

B) R1 = 6 V and R2 = 6V

Explanation:

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3 years ago

In a physics lab, a 60-kg student runs up a 2.0-meter tall flight of stairs in 1.5 seconds. The work done to get to the top is 1

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<span>The student's power rating is approximately 800W.
</span>
Power is the rate of doing work. Its SI unit is Watt. 1 W = 1J/sec

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Power = $\frac{work done}{time} 
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4 years ago

An endothermic reaction is one the uses which form of energy

denis23 [38]

In endothermic reactions energy in the form of heat is given

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