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3 years ago

Please help!!!

Physics

1 answer:

iVinArrow [24]3 years ago

6 0

A). Her distance traveled was (700m + 500m) = 1,200 meters

B). Her displacement was (700m north + 500m south) = 200 meters north

C). Her average speed = (distance covered) / (time to cover the distance)

Speed = (1,200 meters) / (15 seconds)

Speed = 80 meters/second

(Layne is an incredible walker ! That's about 179 miles per hour.)

(She walks 700m in 10 seconds. Usain Bolt runs only 100m in 10 seconds.)

D). Her averge velocity = (displacement) / (time)

Velocity = (200 meters north) / (15 seconds)

Velocity = (13 and 1/3) m/s north

(This is only about 33% faster than Usain Bolt, if he went straight instead of doubling back, and if he could keep it up for 200 meters instead of only 100 meters.)

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Answer:

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2 years ago

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adell [148]

This question is incomplete, the missing image uploaded along this answer below;

Answer:

a) frequency is 2.381 Hz

b) the angular frequency/speed is 14.96 rad/s

c) the magnitude of the magnetic field is 0.5199 T

Explanation:

Given that;

cross sectional Area A = 0.018 m²

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from the diagram. maximum time T = 0.42 sec

a) the frequency f of the generator in hertz

frequency = 1 / T

we substitute

frequency = 1 / 0.42 = 2.381 Hz

Therefore, frequency is 2.381 Hz

b) the angular frequency in rad/s

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we substitute

ω = 2π × 2.381

ω = 14.96 rad/s

Therefore, the angular frequency/speed is 14.96 rad/s

c) the magnitude of the magnetic field.

to determine the magnitude of the magnetic field, we use the following expression;

e = NBAω

from the diagram, e = 28.0 V

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28.0 V = 200 × B × 0.018 × 14.96

28 = 53.856B

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3 years ago

PLS ANSWER FAST WILL GIVE BRAINLEST!!!!

amid [387]

Answer:

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Explanation:

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Answer:

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2 years ago

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stepan [7]

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V = IR

Because we have to find current through whole circuit, we will first find resistance of the whole circuit.

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3 years ago

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