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dimulka [17.4K]
3 years ago
14

Why does a stationary electromagnet attached to an AC source induce current in a wire coil?

Physics
1 answer:
lora16 [44]3 years ago
4 0
This is basically Michael Faraday's law and this is known as electromagnetic induction


That's all I know
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Mary and Jim find an unusual rock in their backyard. Which question about the rock cannot be answered through scientific investi
zysi [14]

Answer:

correct answer is 3(Is it the most unusual rock in the area)

Explanation:

Option 1:

During the formation of a rock some quantity of radioactive elements mixed with it. By measuring the quantity of this radioactive element scientist can determine the age of the rock which is known as absolute age.

option 2:

Throgh scientific investigation scientist can determine the types of minerals which make up the rock

option 3:

Through scientific investigation scientist cannot determine whether the rock is the most unusual or not. It can be determine by just looking all the rock in the area.

Option 4

Through scientific investigation the weight of the rock can be determine and it can be determine whether it is the heaviest rock in the backyard.

9 0
2 years ago
Read 2 more answers
What is the kinetic energy of a 10-kg bicycle moving at 10 m/s?​
Stolb23 [73]

Answer:

Kinetic energy is equals to 0.5mv² where m is the mass in

kilograms and v is the velocity in ms-1

So, for a bicycle of 10kg moving at 10ms-1,

K.E

= 0.5mv²

= 0.5(10)(10²)

= 500 J

Explanation:

3 0
3 years ago
Which of the following choices best represents a potential stressor?
Julli [10]

an unexpected visitor as it begins making you feel uncomfortable but it's get calm


6 0
2 years ago
Under which conditions do both convex and concave mirrors form virtual images? State whether or not each can form a real image.
-Dominant- [34]
Hi!

Convex mirrors always form virtual images regardless of object position and the image is formed behind the mirror in both cases I.e. at infinity and between infinity and the pole. The image is diminished in both the cases.

Concave mirrors form a virtual image when the object is placed in between the Principal focus and the Pole and the image is formed behind the mirror. The virtual image is enlarged in this case. In all other object positions I.e. at infinity, beyond Center of curvature, at Center,between centre of curvature and principal focus and at principal focus, a real and an inverted image of the object is formed.
The ray diagrams for all the positions for the object in concave and convex mirrors are given below:

3 0
2 years ago
A train travels due south at 25 m/s (relative to the ground) in a rain that is blown toward the south by the wind. The path of e
olasank [31]

Answer:

Explanation:

Given

Train travels towards south with a velocity if v_t=25\ m/s

Rain makes an angle of \theta =66^{o}  with vertical

If an observer sees the drop fall perfectly vertical i.e. horizontal component of rain velocity is equal to train velocity

suppose v_r is the velocity of rain with respect to ground then

v_r\sin\theta =v_t

v_r\times \sin (66)=25

v_r=27.36\ m/s

Therefore velocity of rain drops is 27.36 m/s              

8 0
3 years ago
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