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Gwar [14]
1 year ago
14

An alternating current of 60hz changes direction 100 times per second.

Physics
1 answer:
Dvinal [7]1 year ago
7 0

Answer:

False

Explanation:

Because it is 60 hz

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Which do you think will penetrate farther into a block of lead, x-rays, or gamma rays
disa [49]
Gamma rays because it has more penetrating power and frequency but shorter wavelength.
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3 years ago
A psychopathologist records the number of criminal offenses among teenage drug users in a nationwide sample of 1,201 participant
lara [203]

Answer:

Standard deviation = 3

Explanation:

Given

N = 1201

SS = 10800

Required

Determine the standard deviation

First, we need to determine the variance;

Variance = \frac{SS}{N - 1}

This gives:

Variance = \frac{10800}{1201 - 1}

Variance = \frac{10800}{1200}

Variance = 9

Know that:

Variance = SD^2

Where SD represents standard deviation

This gives

9 = SD^2

Take square root

SD = \sqrt 9

SD = 3

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3 years ago
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Answer:

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Explanation:

Hopefully this helped!

4 0
2 years ago
Which phrase is the best definition of energy
raketka [301]

Answer:

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Explanation:

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5 0
3 years ago
A force of 150 N is applied to a 25 cm- piston in a hydraulic machine. What is the area
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8.3 cm^2

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