Physics, 24.12.2019 18:31 20bakerai

Which equations could be used as is, or rearranged to calculate for frequency of a wave? check all that apply.

1. wavelength = frequency / speed
2. speed = frequency x wavelength
3. wavelength = speed / frequency
4. frequency = speed / wavelength
5. frequency = wavelength over speed
6. speed = wavelength x frequency

Answers: 3

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Answers

-- Equations #2 and #6 are both the same equation,
and are both correct.

-- If you divide each side by 'wavelength', you get Equation #4,
which is also correct.

-- If you divide each side by 'frequency', you get Equation #3,
which is also correct.
With some work, you can rearrange this one and use it to calculate
frequency.

Summary:

-- Equations #2, #3, #4, and #6 are all correct statements,
and can be used to find frequency.

-- Equations #1 and #5 are incorrect statements.

Answer from: wwwcarolynzouowficz

The correct answers to the question are 2,3,4 and 6 options respectively.

EXPLANATION:

Let us consider a wave which is moving with a speed v in a medium .

Let f and $\lambda$ is the frequency and wavelength of the wave.

The relation between frequency,wavelength and speed is given as -

speed = $=\ frequency\times wavelength$

= $f\times \lambda$

The wavelength of the wave is calculated as -

$wavelength=\ \frac{speed}{frequency}$

Similarly frequency of the wave can be calculated as-

$frequency=\ \frac{speed}{wavelength}$

The option 1 is a wrong relation. So, we can not calculate the wavelength through this equation.

The option 2 is a right relation. By rearranging it, we can calculate the frequency of the wave.

The option 3 is a correct relation. So, we can calculate the wavelength through it.

The option 4 is also a correct relation. By rearranging it, we can calculate the wavelength.

The option 5 is a wrong relation.

The option 6 is also a right relation. By rearranging it, we can calculate the wavelength of the wave.

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

Answer from: Quest

because if the tool that you are using is not balanced it there would be false mass.

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