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Tasya [4]
4 years ago
13

The force on a straight current-carrying wire in a magnetic field is proportional to the current in the wire, the strength of th

e field, and the _____ of the wire.
A) Make-up
B) Length
C) X-Section
Physics
1 answer:
Svetach [21]4 years ago
7 0

magnetic force on a current carrying wire is given as

F = i(L x B)

F = i L B sin\theta

so it is proportional to

(i) current in the wire (i)

(ii) strength of magnetic field (B)

(iii) length of the wire (L)

so correct answer would be

<em>B) Length </em>

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A 1.2 nf parallel-plate capacitor has an air gap between its plates. Its capacitance increases by 3.0 nf when the gap is filled
Damm [24]

Answer:

2.5

Explanation:

The capacitance of a parallel-plate capacitor filled with dielectric is given by

C=kC_0

where

k is the dielectric constant

C_0 is the capacitance of the capacitor without dielectric

In this problem,

C_0=1.2 nF is the capacitance of the capacitor in air

C=3.0 nF is the capacitance with the dielectric inserted

Solving the equation for k, we find

k=\frac{C}{C_0}=\frac{3.0 nF}{1.2 nF}=2.5

3 0
3 years ago
Read 2 more answers
Who needs to know physics when they are making a satellite
vladimir2022 [97]
First satellite was Sputnik and it was a race then to send satellites!! Everyone starts experimenting how to launch.

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4 0
4 years ago
Part 1
wel

Answer:

Part 1: 0.3789

Part 2: 746 J

Part 3: 2.162 kW

Explanation:

Part 1:

Eff=  1-\frac{1223}{1969}

Eff= 0.378873 ≈ 0/3789

Part 2:

W= 0.3789(1969)

W= 746 J

Part 3:

Power=\frac{W}{t}

Power= \frac{746}{0.345}

Power= 2162.3188 Watts

2162.3188 W-----> 2.162 kW

4 0
2 years ago
Apakah itu hukum hooke.....can i knw detail n simple?
butalik [34]
Hooke's law is stated as: F = -kx

Where:

F = Force to compress or extend a spring (unit N)
k = Spring constant
x = displacement of spring

Or to help you in your native language:

<span>F = adalah gaya 
</span><span>k = adalah konstante pegas 
</span><span>x = adalah jarak pergerakan pegas dari posisi normalnya</span>
4 0
3 years ago
A 1.0-m-long copper wire of diameter 0.10 cm carries a current of 50.0 A to the east. Suppose we apply to this wire a magnetic f
Lostsunrise [7]

Answer:

1.379 x 10^{-3} T. and into the page.

Explanation:

Download pdf
3 0
3 years ago
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