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2 years ago

Hi i just need some points and i want to give some to you

Physics

1 answer:

xz_007 [3.2K]2 years ago

8 0

Answer:

ok thanks

Explanation:

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What conversion takes place in a generator?

Andrew [12]

Answer:

B. An electric current into a magnetic field

Explanation:

The generation of electrical power requires relative motion between a magnetic field and a conductor. In a generator, mechanical energy is converted into electrical energy. The electricity produced by most generators is in the form of alternating current.

5 0

3 years ago

Read 2 more answers

Suppose a large power plant generates electricity at 12.0 kV. Its old transformer once converted this voltage to 315 kV. The sec

SpyIntel [72]

Answer:

2.32
0.43

Explanation:

12.0 kv primary voltage

315 kv secondary voltage ( converted voltage ) V1 or Vo

v2 (Vn)= 730 kv new secondary voltage

a) Ratio of turns in 730 kv to turns in 315 kv

$\frac{Vn}{Vo} = \frac{Nn}{No}$ = $\frac{730}{315}$ therefore the ratio of turns = 2.317 ≈ 2.32

B) ratio of the new current output to the old current output for the same power input to the transformer

since the power input is the same

$\frac{In}{Io} = \frac{\frac{Vp}{Vn} }{\frac{Vp}{Vo} }$ equation 1

Vp = primary voltage, Vo = old secondary voltage, Vn = new secondary voltage, In = new secondary current, Io = old secondary current

therefore equation 1 becomes

$\frac{In}{Io} = \frac{Vo}{Vn}$ = 315 / 730 = 0.43

7 0

3 years ago

At the instant the traffic light turns green, a car that has been waiting at an intersection starts with a constant acceleration

Setler79 [48]

Answer:

(a) 300 ft

(b) 60 ft/s

Explanation:

distance $d=0.5at^{2}$ where a is acceleration and t is time

$d=0.5\times 6\times t^{2}=3t^{2}$

Also, d=vt where v is the velocity

d=30t

Therefore

$30t=3t^{2}$ hence t=10 s

Substituting t is either formula

d=30t=30*10=300 ft

Also

v=at hence $v=6\times 10=60 ft/s$

4 0

3 years ago

The magnitude of the charge of the electron is:

brilliants [131]

Answer:

a. Exactly the same as the magnitude of the charge of the proton.

Explanation:

The elementary charge (e) is the smallest electric charge that can exist in the universe. Any positive or negative electric charge can be expressed as a multiple of the elementary charge, since is the electric charge carried by a single proton or, equivalently, the magnitude of the electric charge carried by a single electron (-1e).

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3 years ago

A bullet has a speed of 500 m/s as it leaves a rifle. If it is fired horizontally from a cliff 12m above a lake, how far does th

dem82 [27]

Because you don’t have it

3 0

3 years ago