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pav-90 [236]
3 years ago
13

Part A Magnetic field lines form closed loops Magnetic field lines form closed loops Around and through bar magnets. Through cur

rent-carrying loops. Around current-carrying straight wires. All of the above.
Physics
1 answer:
alex41 [277]3 years ago
8 0

Answer:

Magnetic field lines form closed loops around current carrying straight wires.

Explanation:

Magnetic field lines is known to form closed loop (which also serves as a bar magnet) around current carrying conductor in a magnetic field. This direction of the loop around the conductor either clockwise or anticlockwise will determine the direction of current in the conductor.

This directions can be determined using the Maxwell cockscrew or clenched fist rule.

According to clenched fist rule which states if the conductor is grasp with the right hand, the curled finger will point in the direction of the magnetic field and the thumb will point in the direction of the current.

Note that the magnetic field lines around the conductor also behaves like a bar magnet.

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Which picture represents 2NO2?
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2NO2 means that there is 2 oxygen atoms and one nitrogen with two sets of that. So its the third one

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3 years ago
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A 55.0-g aluminum block initially at 27.5 degree C absorbs 725 J of heat. What is the final temperature of the aluminum? Express
andrew11 [14]

Answer:

Final temperature of the aluminum = 41.8 °C

Explanation:

We have the equation for energy

      E = mcΔT

Here m = 55 g = 0.055 kg

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E = 725 J

Substituting

     E = mcΔT

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3 years ago
If the period of the pendulum is tripled, what is the length of the string increased by?
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The period of the pendulum is proportional to the square root of its length.
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Two coconuts fall freely from rest at the same time, one from a tree twice as high as the other. If the coconut from the shorter
valentinak56 [21]

Wee can use here kinematics

as we know that

y = v*t + \frac{1}{2} at^2

for shorter tree we know that

y = 0 + \frac{1}{2}*9.8 * 2^2

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t = 2.83 s

so the time taken is 2.83 s

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3 years ago
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