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kifflom [539]
3 years ago
11

Calculate the electrical energy expended in a device across which the circuit voltage drops by 40.0 volts in moving a charge of

2 coulombs.
A) 20
B) 80
Physics
2 answers:
bogdanovich [222]3 years ago
7 0
Electrical energy = Q x V
Energy = 2 x 40
= 80

The correct answer is B.
elixir [45]3 years ago
4 0

Answer:

80

Explanation:

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A car with a mass of 1,500 kg requires a centripetal force of 640 N to safely follow a circular curve in the road at 13.4 m/s. W
Tamiku [17]
<h2>Answer</h2>

Radius is 421 m.

<u>Explanation </u>

A car with a mass of 1,500 kg requires a centripetal force of 640 N to safely follow a circular curve in the road at 13.4 m/s. Therefore, for radius we use formula which is Fc = mv ^ 2 / r,

As mass = m = 1500kg,

Centripetal force = Fc = 640N,

Velocity = v = 13.4 m / s

By putting values, Fc = mv ^ 2 / r,

r = mv ^ 2 / Fc,

=> r = ( 1500kg ) . ( 13.4 m / s) ^ 2 / 640,

=> r = ( 1500kg ) . ( 179.56 ) / 640,

r = 269340 / 640,

=> r = 420.84 m.

Radius is 421 m.

8 0
3 years ago
Read 2 more answers
Light waves travel through space
VladimirAG [237]

C.even though there is almost no material in the interstellar medium, but do transfer  energy.

Explanation:

Light waves travels through space even though there is almost no material in the interstellar medium but do transfer energy.

A wave is any disturbance that transmits energy from one place to another.

  • Light is a form of wave which belongs to the electromagnetic spectrum.
  • They are propagated transverse to their source of energy.
  • These electromagnetic waves are special types of waves.
  • They are distinct because they do not require a material medium for their propagation unlike other waves.
  • In the interstellar medium. a vacuum is in place.
  • There are no matter that can be used for propagating waves.
  • Light waves still passes through because they do not require any medium to propagate.

learn more:

Electromagnetic waves brainly.com/question/12450147

#learnwithBrainly

7 0
3 years ago
In 1687, Isaac Newton published a book explaining his three laws of planetary motion and the law of gravity. The importance of t
alexdok [17]
B. all of nature follows uniform, unchaining laws.
5 0
3 years ago
HELP I DONT HAVE THAT MUCH POINTS LEFT BUT 15 POINTSSS
Aliun [14]

Answer:

A

Explanation:

the answers are all not good, but I would say A is the best

4 0
3 years ago
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As the earth rotates, what is the speed of a physics student in Miami, Florida, at latitude 26∘? Ignore the revolution of the ea
ASHA 777 [7]

Answer:

v =418 m/s

Explanation:

given,

Radius of earth = 6400 Km

speed of a physics student in Miami, Florida, at latitude 26° = v

time period of rotation = 24 hour = 24 × 3600

                                                       = 86400 s

distance = speed × time

v = \dfrac{distance}{time}

v = \dfrac{6400\times cos (26^0)\times 2 \pi }{86400}

v =0.41831 Km/s

v =418 m/s

hence, the velocity of the student is equal tov =418 m/s

6 0
3 years ago
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