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3 years ago

This is a Physics worksheet. please help.

Physics

1 answer:

natulia [17]3 years ago

7 0

i think the answer is A

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A long, thin solenoid has 450 turns per meter and a radius of 1.17 cm. The current in the solenoid is increasing at a uniform ra

sergey [27]

Answer:

$\frac{di}{dt} = 7.31 \ A/s$

Explanation:

From the question we are told that

The number of turns is $N = 450 \ turns$

The radius is $r = 1.17 \ cm = 0.0117 \ m$

The position from the center consider is x = 3.45 cm = 0.0345 m

The induced emf is $e = 8.20 *10^{-6} \ V/m$

Generally according to Gauss law

$\int\limits { e } \, dl = \mu_o * N * \frac{di}{dt } * A$

=> $e * 2\pi x = \mu_o * N * \frac{d i }{dt } * A$

Where A is the cross-sectional area of the solenoid which is mathematically represented as

$A = \pi r ^2$

=> $e * 2\pi x = \mu_o * N * \frac{d i }{dt } * \pi r^2$

=> $\frac{di}{dt} = \frac{2e * x }{\mu_o * N * r^2}$ ggl;

Here $\mu_o$ is the permeability of free space with value

$\mu_o = 4\pi * 10^{-7} \ N/A^2$

=> $\frac{di}{dt} = \frac{2 * 8.20*10^{-6} * 0.0345 }{ 4\pi * 10^{-7} * 450 * (0.0117)^2}$

=> $\frac{di}{dt} = 7.31 \ A/s$

6 0

4 years ago

Below is a physics question

Allisa [31]

Explanation:

i1=1ampere

i1+i2=I

VA−VB=i1×3Ω=i2×6

⇒1×3=i2×6

2i=21ampere

Hence I=i1+i2=1+0.5=1.5ampere

Req=2+3+63×6=2+93×6=4Ω

equivalent circuit

Refer image .2

From KVL

1req=v

v=1.5×4

8 0

3 years ago

Un incendie s'est déclaré ce jeudi vers 18h30 dans un entrepôt de 2000m2 de l’usine Metalutex. Une entreprise de stockage de mat

dolphi86 [110]

Answer:

I am the bloopy blap blap man do u know english

3 0

3 years ago

Question 7

DedPeter [7]

AnswDIVID THEN SEMPFL THEN GRT 80.8

Explanation:

8 0

3 years ago

Which of the following is the reason that a fixed pulley makes work easier?

kherson [118]

<u>Answer</u>

A fixed pulley is one of many simple machines that can make work easier. In the fixed pulley system, we pull down on one side of the rope and the other side goes up. Here the pulley can change the direction of force on a rope or belt that moves along its circumference.
we use the same amount of force to pull down as we lift the toy ourselves.

8 0

3 years ago