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3 years ago

Electrical energy is transformed into mechanical energy in a motor when the

Physics

2 answers:

Yuri [45]3 years ago

5 0

Answer:

A. Commutator

Explanation: took the quiz

lapo4ka [179]3 years ago

4 0

Answer: battery

Explanation:

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A toy helicopter takes off and moves 6 m up and then 1 m back down. What

klio [65]

the answer is 5 m up AKA "B"

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4 years ago

A climber is attached to a vertical rope that has a tension of

algol [13]

That is tention in the butt hole? /*\

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3 years ago

A suitcase is pulled 28 feet along a flat sidewalk with a constant upward force of 80 lb at an angle of 23degrees with the horiz

Elenna [48]

Answer:

2795.3 J

Explanation:

distance, d = 28 feet = 8.53 m

Force, F = 80 lb = 356 N

Angle, θ = 23°

Work = F x d x cos θ

W = 356 x 8.53 x cos 23

W = 2795.3 J

Thus, the work done is 2795.3 J.

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4 years ago

The mass of a string is 5.9 × 10-3 kg, and it is stretched so that the tension in it is 200 n. a transverse wave traveling on th

bagirrra123 [75]

The velocity of the wave on the string is given by

$v=\sqrt{\frac{T}{\frac{m}{L}}} \\ v=\sqrt{\frac{TL}{m}}$

Solving the above equation,

$v^2=\frac{TL}{m} \\ L=\frac{v^2m}{T}$

The frequency of the wave $f=300$ and wave length is $0.76$

The velocity is $v=(300)(0.76)=228$

Substituting numerical values,

$L=\frac{228^2(0.0059)}{200}\\ T=1.534$

The length of the string is $1.534 m$

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3 years ago

A child looked at

fgiga [73]

The answer to your question is A.

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2 years ago