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BlackZzzverrR [31]
4 years ago
7

1. Newton's 1st Law: A skydiver opened their parachute and now experiences a force of gravity of -450 N (down) and a force of ai

r resistance of +450N (up).
a) What is the net force (sum) acting on the skydiver?

Answer:
Physics
1 answer:
pogonyaev4 years ago
3 0
Net force is zero, so skydiver continues to fall at a constant velocity (called terminal velocity)
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What was the maximum speed of the car in your experiment?
MA_775_DIABLO [31]
The measurements used in the experiment is the amount of speed over time.

The measurement of speed is indicated along the “y” axis.

Upon viewing the graph, the highest point along the “y” axis shown is 25 m/s. This would be the maximum.

The maximum speed of the car would be 25 m/s.
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3 years ago
A boy lifted a 50 newton rock 1 meter. How much work was done?
dem82 [27]

Answer:

The answer is 50 Nm

Explanation:

<h3><u>Given</u>;</h3>
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Which three metal do you think might be present in alnico explain ? ans which one are magnetic​
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8 0
4 years ago
if you went to the doctor 3 weeks ago &amp;&amp; youre going back, will they have to measure your height and weigh you again?
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A vacuum gage connected to a chamber reads 39 kPa at a location where the atmospheric pressure is 92 kPa. Determine the absolute
Nata [24]

Answer: 53 kPa

Explanation:

Absolute pressure is a pressure value referred to absolute zero or vacuum. This value indicates the total pressure to which a body or system (the chamber in this situation) is subjected, considering the total pressure acting on it.

In this sense, the equation that will be useful in this case is:

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Where:

P_{atmospheric}=92 kPa is the atmospheric pressure

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P_{absolute} is the absolute pressure

Isolating P_{absolute}  from (1):

P_{absolute}=P_{atmospheric} - P_{vacuum}  (2)

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Finally:

P_{absolute}=53 kPa=53(10)^{3} Pa This is the absolute pressure in the chamber

7 0
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