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Nimfa-mama [501]

3 years ago

15

A solenoid with 500 turns has a radius of 0.040 m and is 40 cm long. if this solenoid carries a current of 12 a, what is the mag

nitude of the magnetic field near the center of the solenoid? (? 0 = 4? × 10-7 t · m/a

1 answer:

frosja888 [35]3 years ago

7 0

Are there any options? I had one similar to this not to long ago

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How does Coulomb's law relate to test charges?

Feliz [49]

Coulomb's law applies to all charges. It doesn't care what the specific
purpose of the individual charge may be at the moment.

7 0

4 years ago

Mary slams her breaks and the coffee cup sitting in the dashboard spill everywhere, what Newton law of motion explains why the c

Dimas [21]

Answer:

inertia

Explanation:

a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

aka

it goes on because nothing is resisting it, in this case however, the car is there to stop it, and the result is spilled coffee (rip)

3 0

3 years ago

Two high-current transmission lines carry currents of 29.0 A and 78.0 A in the same direction and are suspended parallel to each

jarptica [38.1K]

Answer with Explanation:

We are given that

$I_1=29 A$

$I_2=78 A$

$d=38 cm=\frac{38}{100}=0.38 m$

$1 m=100 cm$

a.Length of segment,l=20 m

Magnetic force ,F= $\frac{2\mu_0I_1I_2 l}{4\pi d}$

$\frac{\mu_0}{4\pi}=10^{-7}$

Substitute the values

$F=\frac{10^{-7}\times 29\times 78\times 20}{0.38}=0.0119 N$

Hence, the magnetic force exert by each segment on the other=0.0119 N

b.We know that when current carrying in the wires are in same direction then the force will attract to each other.

Hence, the force will be attractive.

4 0

3 years ago

Read 2 more answers

Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecu

AfilCa [17]

Answer:

U

Explanation:

The first law of thermodynamics states that:

$\Delta U = Q-W$

where

U is the internal energy of the gas, which represents the sum of the chemical and thermal energy stored in the atoms and molecules of the gas

$\Delta U$ represents the variation of internal energy

Q is the heat absorbed by the system

W is the work done by the system

So, the sum of the chemical and thermal energy stored in atoms and molecules is represented by U, the internal energy.

8 0

3 years ago

Read 2 more answers

A ping-pong ball is shot straight north from a popgun at 4.0 m/s. The wind is blowing to the west at 3.0 m/s. What is the actual

Vlad1618 [11]

Actual velocity of the ping-pong ball= 5 m/s

Explanation:

velocity of ping pong ball because of the shot gun= 4 m/s North

velocity added to the ping-pong ball due to the wind=3 m/s

These velocities are perpendicular to each other. so we use Pythagoras theorem to find the resultant velocity of the ping- pong ball

so the actual velocity of the ping-pong ball =V= √4²+3²

V= √25

V= 5 m/s

5 0

4 years ago