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Ronch [10]
3 years ago
11

you throw a rock out of a 7th story window. you time that it takes 3.7 seconds to hit the ground, and measure that it hit the gr

ound 115 m from the base of the building
Physics
1 answer:
seropon [69]3 years ago
7 0

First of all, I doubt it ... you threw the rock out of your hand
at least 69.5 miles per hour ? ?  Maybe more, depending on
the angle.

And that's all I have to say about this one, since you haven't
asked any question.
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A dog runs down his driveway with an initial speed of 5 m/s for 8 s, and then uniformly increases his speed to 10 m/s in 5 s.
MakcuM [25]
Acceleration is given by change in velocity divided by change in time, so his acceleration should just be (10-5)/5 which is [tex] \frac{5}{2} \frac{m}{s^{2}} [tex]

The driveway is 40 meters plus 225/4. You can do the math.
8 0
3 years ago
What would you do if someone came up atta nowhere and stole your kneecaps, what do you do?
arsen [322]

Answer:

peat them with my dislocated legs

3 0
3 years ago
When you are using a crowbar to lift a large rock, you are working agents the force called
TEA [102]
When you're using a crowbar to lift a large rock, you are working against the force called

\boxed {\bf Gravity}


\bf Explanation:
Gravity on Earth is what gives weight to all objects, it's defined as all things that have mass or energy are gravitated towards each other. Therefore when you're using a crowbar to lift a large rock, the weight is caused by gravity.


I hope this helps you!
7 0
3 years ago
Why is water always used in energy generation (water -> steam -> turbine) instead of a liquid with a lower specific heat c
frez [133]

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Other factor is the fact that water has a really high specific heat. This means that water, and more specifically steam, can aborb and transport more energy. A lower heat capacity would imply the need to boil more of the liquid to obtain the same amount of energy. This combine with the fact that water expands at a large rate when boiling, combine with everything mentioned previously, and you get a liquid with all the characteristics that a efficient turbine requires to work.

8 0
3 years ago
Mary was looking out of the window she saw lightening and then heard thunder a few seconds later explain why she saw lightening
alekssr [168]

Explanation:

It is based upon the fact that " The light travels faster then sound." As the speed of light is faster then the speed of sound, light travels 300,000 km per second and sound travels 1192 km per hour. That is why we observe the lightening first and hear the the sound of thunder later.

        You can do this experiment by yourself. Once you see the lightening start counting the seconds until you hear the sound of thunder.Then divide the seconds by 5, you will find out how many miles away the lightening strike was.

3 0
3 years ago
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