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3 years ago

The velocity of a wave is the product of the frequency and the

Physics

2 answers:

Amiraneli [1.4K]3 years ago

7 0

Answer:

option A

Explanation:

Velocity = Wavelength / Time

But we know that Frequency = 1 / Time. So ,

Velocity = Wavelength × Frequency

Nuetrik [128]3 years ago

6 0

Answer:

The answer is A. wavelength

Based on the wavespeed formula v=fλ

Velocity of wave is the product of frequency(f) and wavelength(λ)

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A toroidal solenoid has 590 turns, cross-sectional area 6.20 cm^2 , and mean radius 5.00 cm .Part A. Calcualte the coil's self-i

Rudiy27

Complete Question

A toroidal solenoid has 590 turns, cross-sectional area 6.20 cm^2 , and mean radius 5.00 cm .

Part A. Calculate the coil's self-inductance.

Part B. If the current decreases uniformly from 5.00 A to 2.00 A in 3.00 ms, calculate the self-induced emf in the coil.

Part C. The current is directed from terminal a of the coil to terminal b. Is the direction of the induced emf from a to b or from b to a?

Answer:

Part A

$L = 0.000863 \ H$

Part B

$\epsilon = 0.863 \ V$

Part C

From terminal a to terminal b

Explanation:

From the question we are told that

The number of turns is $N = 590 \ turns$

The cross-sectional area is $A = 6.20 cm^2 = 6.20 *10^{-4} \ m$

The radius is $r = 5.0 \ cm = 0.05 \ m$

Generally the coils self -inductance is mathematically represented as

$L = \frac{ \mu_o N^2 A }{2 \pi * r }$

Where $\mu_o$ is the permeability of free space with value $\mu_o = 4\pi * 10^{-7} N/A^2$

substituting values

$L = \frac{ 4\pi * 10^{-7} * 590^2 6.20 *10^{-4} }{2 \pi * 0.05 }$

$L = \frac{ 2 * 10^{-7} * 590^2 6.20 *10^{-4} }{ 0.05 }$

$L = 0.000863 \ H$

Considering the Part B

Initial current is $I_1 = 5.00 \ A$

Current at time t is $I_t = 3.0 \ A$

The time taken is $\Delta t = 3.00 ms = 0.003 \ s$

The self-induced emf is mathematically evaluated as

$\epsilon = L * \frac{\Delta I}{ \Delta t }$

=> $\epsilon = L * \frac{ I_1 - I_t }{ \Delta t }$

substituting values

$\epsilon = 0.000863 * \frac{ 5- 2 }{ 0.003 }$

$\epsilon = 0.863 \ V$

The direction of the induced emf is from a to b because according to Lenz's law the induced emf moves in the same direction as the current

6 0

3 years ago

If we compare the force of gravity to strong nuclear force, we could conclude that A.gravity is the weaker force; it is related

maxonik [38]

Hi lovely,

The answer you're looking for would be C.

4 0

3 years ago

Read 2 more answers

Apart from physical factors, what other environmental factors are in your environment?

lora16 [44]

Answer:

Explanation:

Factors which affects and impacts our environment may include water, sunlight, buildings and so many other. The factors which can touched are called the physical factors. The physical factirs include buildings, humans and so on. Other factirs which aren't physical inckide the the effects posed to the environment t by biological and chemical factirs which may include, the impacts in sunlight and Rainfall, the pH and so on.

5 0

3 years ago

The velocity of in water is 1500 m/s.

victus00 [196]

1500 m

Explanation:

Step 1:

From the basics of Sound Physics,

Distance = (Speed * Time) / 2

Here Speed = 1500 m/s

Time = 2 Seconds

Step 2:

Distance = ( 1500 * 2)/2

= 1500 m

7 0

3 years ago

What does the slope of the curve on a distance vs time graph represent?

Lilit [14]

Slope of a curve Y plotted against X is mathematically given as

$slope = \frac{dy}{dx}$

now here we can see that if similarly graph is plotted against distance and time then slope is given as

$slope = \frac{dx}{dt}$

here we can say that above is ratio of small distance and very small interval of time.

so here we can say that this ratio of distance and time for very small interval of time is known as instantaneous speed of the object which is falling freely under gravity.

So here slope of the graph will represent the speed at a given instant.

6 0

3 years ago