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Marina86 [1]
3 years ago
9

Give three practical uses of electromagnets

Physics
1 answer:
PtichkaEL [24]3 years ago
7 0
Three practical uses of electromagnets would be
Light. The waves
Electric locks. The bolts that are used by the
coils
Cranes. The electric ones that are found in
scraps
Cars computers washing machines all use
Electromagnets . Even CD players DVDs
Players
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What Is the acceleration of a toy car that starts from rest and has a speed of 0.12 m/s after 0.1?
VikaD [51]

Given: Initial velocity of toy car (u ) = 0

Final velocity of toy car (v) = 0.12 m/s

Required time (t) = 0.1 s

To find: The acceleration of the toy car.

Let the acceleration of the toy car be (a)

Formula Used: 1st kinematic equation of motion

                              v = u + at ---------------------------(i)

Here, all alphabets are in their usual meanings

Now, from equation (i), we shall calculate the value of 'a'.

so,                          a = (v - u) /t

or,                          a = (0.12 m/s - 0) / 0.1s

or,                          a = 1.2 m/s²

Hence, the required acceleration of the toy car will be 1.2 m/s².

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3 years ago
An unknown number of identical light bulbs are connected to a 15 V battery in parallel. The current through the battery is 2 A.
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Answer:

An unknown number of identical light bulbs are connected to a 15 V battery in parallel. The current through the battery is 2 A. If the light bulbs are connected to the battery in series, the current through the battery is 5 mA. How many bulbs are there?

3 bulbs are there from the analogy given above

Explanation:

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An object moves with a constant speed of 20 m/s on a circular track of radius 100 m. What is the tangential acceleration of the
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Answer:4s^-1

Explanation:Tangential Acceleration=v^2/r=(20)²/100=400/100

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What are the types of energy?​
LUCKY_DIMON [66]

Answer:

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Explanation:

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