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svlad2 [7]
3 years ago
13

Differentiate between loadstone and bar magnet​

Physics
1 answer:
White raven [17]3 years ago
7 0

Answer:

Explanation:

Permanent (Bar) Magnet. —-) Electromagnet
They are permanently magnetized. —-) These are temporarily magnetized.

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A light bulb is rated at 25 W when operated at 120 V. How much charge enters (and leaves) the light bulb in 1. 0 min?
aleksklad [387]

The amount of charge enters (and leaves) is 12 Coulomb.

<h3 /><h3>How can we find the value of the amount of charge enters (and leaves)?</h3>

Here we are using the formula,

I=\frac{P}{V} and Q= I \times t

We are given,

P = Power of the light bulb = 25 Watt.

V = The amount of voltage where the light bulb operated = 120 Volt.

t= The time when charge enters (and leaves) the light bulb = 1.0 min = (1 \times 60) second = 60 S

We have to find,

I= The amount of current flows in the light bulb.

Q= The amount of charge enters (and leaves) the light bulb.

Now we substitute the values of known parameters in the first equation, we find that,

I=\frac{P}{V}=\frac{25}{120}

Or, I= 0.20 A

The amount of current flows in the light bulb is 0.20 Ampere.

Now, we put the value of I in the second equation,

Q= I \times t= 0.20 \times 60

Or, Q=12 C

So, from the above calculations we can see that the amount of charge enters (and leaves) the light bulb is 12 Coulomb.

Learn more about the light bulb:

brainly.com/question/8979272

#SPJ4

3 0
2 years ago
Upthrust given by Water to the body
erica [24]

Answer:

According to Archimedes principle the upthrust on the body is equal to the weight of the water displaced by the body. ... Here, the mass would be the net difference in the weight of the object.

7 0
3 years ago
What happens when a wave reflects?
solong [7]
They bounce off just like sun rays when they heat the atmosphere they bounce off reflection
4 0
4 years ago
What are rocks formed from sediment called?
kherson [118]

a rock that is formed form sediments is called sedimentary rocks

please give brainlyist if correct

5 0
4 years ago
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A 20 kg bicycle carrying a 50 kg girl is traveling at a speed of 8 m/s. What is the kinetic energy of the girl and bicycle?
MAXImum [283]

Answer:

2.24kJ

Explanation:

Kinetic energy is the energy that a object possesses due to its motion.

Let kinetic Energy (KE),

Here both the Bicycle and the girl is travelling at the given speed , therefore we have to consider the total mass

according ti the definition ,

KE=\frac{1}{2}*mass*velocity^{2}  \\=\frac{1}{2}*(50+20)kg*(8ms^{-1} )^{2}\\  =2240J\\=2.24kJ

4 0
4 years ago
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