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Pie
3 years ago
8

A permanent magnet picks up an iron nail, magnetizing the nail. How is this system different from an electromagnet?

Physics
2 answers:
Marina86 [1]3 years ago
7 0

D

Its D i think because it doesnt refer to any other things

mote1985 [20]3 years ago
6 0

Answer:the nail is magnetized by a permanent magnet instead of by a solenoid with an electric current running through it

Explanation:

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4 0
1 year ago
Please help!?!?
Vanyuwa [196]

Since bulb is connected in the closed circuit at the position of D

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5 0
3 years ago
Read 2 more answers
how long would it take for a resultant upward force of 100N to increase the speed of 50kg object from 100m/s to 150m/s​
ValentinkaMS [17]

Answer:

25 sec

Explanation:

F = ma

100 = 50 a

a = 2 m/s^2

vf = vo + at

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7 0
2 years ago
What is the number of electrons that move past a point in a wire carrying 500 A of current in 4.0 minutes
mr Goodwill [35]
The current is defined as the amount of charge Q that passes through a given point of a wire in a time \Delta t:
I= \frac{Q}{\Delta t}
Since I=500 A and the time interval is
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the charge is
Q=I \Delta t=(500 A)(240 s)=1.2 \cdot 10^5 C

One electron has a charge of q=1.6 \cdot 10^{-19}C, therefore the number of electrons that pass a point in the wire during 4 minutes is
N= \frac{Q}{q}= \frac{1.2 \cdot 10^5 C}{1.6 \cdot 10^{-19}C}=7.5 \cdot 10^{23} electrons
3 0
3 years ago
A person jogs 4.o km in 32 minutes then 2.0 km in 22 minutes and finally 1.0 km in 16 minutes. What is the joggers average speed
AlladinOne [14]
Average speed = distance travelled / time used
6 0
2 years ago
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