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inna [77]
2 years ago
12

Explain how a voltage is produced in the secondary coil of the transformer.

Physics
1 answer:
Tema [17]2 years ago
4 0

Answer:

the primary coil current produces a magnetic field, which changes as the current changes. the iron core increases the strength of the magnetic field. the changing magnetic field induces a changing potential difference (voltage) in the secondary coil.

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A rod 7.0 m long is pivoted at a point 2.0 m from the left end. A downward force of 50 N acts at the left end, and a downward fo
kicyunya [14]

If the rod is in rotational equilibrium, then the net torques acting on it is zero:

∑ τ = 0

Let's give the system a counterclockwise orientation, so that forces that would cause the rod to rotate counterclockwise act in the positive direction. Compute the magnitudes of each torque:

• at the left end,

τ = + (50 N) (2.0 m) = 100 N•m

• at the right end,

τ = - (200 N) (5.0 m) = - 1000 N•m

• at a point a distance d to the right of the pivot point,

τ = + (300 N) d

Then

∑ τ = 100 N•m - 1000 N•m + (300 N) d = 0

⇒   (300 N) d = 1100 N•m

⇒   d ≈ 3.7 m

6 0
2 years ago
it is possible to tell if objects in space are moving closer to us or farther away based on which of the following?
valkas [14]
I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. It is <span>possible to tell if objects in space are moving closer to us or farther away based on several procedures like parallax and standard candles. I hope the answer has come to your help.</span>
7 0
3 years ago
Read 2 more answers
Help plzzz!!! I only have 10 minutes to turn in
Lostsunrise [7]
  • The mechanic did 5406 Joules of work pushing the car.

That's the energy he put into the car.  When he stops pushing, all the energy he put into the car is now the car's kinetic energy.

  • Kinetic energy = (1/2) (mass) (speed²)

And there we have it

  • The car's mass is 3,600 kg.
  • Its speed is 'v' m/s .
  • (1/2) (mass) (v²) =  5,406 Joules

(1/2) (3600 kg) (v²) = 5406 joules

1800 kg (v²) = 5406 joules

v² = (5406 joules) / (1800 kg)

v² = (5406/1800) (joules/kg)

= = = = = This section is just to work out the units of the answer:

  • v² = (5406/1800) (Newton-meter/kg)
  • v² = (5406/1800) (kg-m²/s²  /  kg)
  • v² = (5406/1800)  (m²/s²)

= = = = =

v = √(5406/1800)  m/s

<em>v = 1.733 m/s</em>

4 0
3 years ago
Please answer for me thanks
Vinvika [58]

I believe one of these are called Elliptical, Spiral, and Irregular Galaxies.

6 0
3 years ago
A rechargeable battery is capable of delivering a current of 0.25 A for 1800 s at a potential difference of 1.5 V.
avanturin [10]

Answer:

<em>a. q=450 c </em>

<em>b. E=675 J </em>

Explanation:

<u>Direct Current (DC) </u>

It's the flow of electric charges in one direction driven by a constant voltage circuit. The intensity of the current flow is computed as

\displaystyle I=\frac{q}{t}

Where q is the constant flow of charge in time t

The energy of an element providing Voltage V, current I during a time t is

E=V.I.t

a. The charge can be computed by solving the first equation for q

q=I.t=0.25\ A.\ 1800\ s=450\ c

b. The energy transferred by the battery is

E=(1.5).(0.25).(1800)=675\ J

5 0
3 years ago
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