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Artyom0805 [142]
2 years ago
13

Which of these is NOT an example of work?

Physics
2 answers:
amid [387]2 years ago
6 0
The correct answer is A. Holding a heavy book.

In this case, there is not a displacement of the system and you must remember that work is force times displacement.
Kitty [74]2 years ago
3 0
The correct answer is actually A
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When a wire with a current is placed in a magnetic field,
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A. electrical energy is transformed into mechanical energy.
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You have to run 2.2 miles in track. How far is this in feet? Note: There are
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Answer: B

Explanation: This can be easily done by inputting 5280 * 2.2.

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Imagine you have to design a safe, useful device that uses an electric discharge to make your life better. How would you describ
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Explanation:

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3 years ago
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A rescue pilot drops a survival kit while her plane is flying at an altitude of 1.5 km with a forward velocity of 100.0 m/s. If
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1750 meters.  
First, determine how long it takes for the kit to hit the ground. Distance over constant acceleration is: 
d = 1/2 A T^2
 where
 d = distance
 A = acceleration
 T = time 
 Solving for T, gives
 d = 1/2 A T^2
 2d = A T^2
 2d/A = T^2
 sqrt(2d/A) = T 
 Substitute the known values and calculate.
 sqrt(2d/A) = T
 sqrt(2* 1500m / 9.8 m/s^2) = T
 sqrt(3000m / 9.8 m/s^2) = T
 sqrt(306.122449 s^2) = T
 17.49635531 s = T 
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17.50 seconds for the kit to hit the ground, the kit needs to be dropped 17.50
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17.50 s * 100 m/s = 1750 m
3 0
3 years ago
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Jackie rides her bike to school every day and enjoys playing beach volleyball on weekends. She also helps with tasks around the
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Answer:

The correct answer is - C) Jackie may maintain healthy body fat levels.

Explanation:

Jackie has a very active daily and on weekends routine that includes riding the bike, playing volleyball, pushing weeds, and sweeping the porch. The activities that Jackie is performing daily as well as the time that she spends on exercise may help her to maintain body fat levels.

Being physically active helps in maintaining fat levels in the body of an individual, and it is healthy for the individual.

Thus, the correct answer is - C) Jackie may maintain healthy body fat levels.

6 0
2 years ago
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