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2 years ago

A wave with a period of 0.008 second has a frequency of?

Physics

2 answers:

boyakko [2]2 years ago

8 0

As per the question the time period of the wave is 0.008 s.

we have to calculate the frequency of the wave.

Before going to calculate the frequency of the wave first we have to understand the frequency.

Frequency of a wave is defined as the number of waves passing through a point in unit time.

Time period of a wave means time taken by a wave for one complete vibration or oscillation.

The relation between frequency and wave is given as frequency is the reciprocal of time period.

Mathematically we can say $frequency[ f]=\frac{1}{T}$

$= \frac{1}{0.008s}$

=125 Hz [ans]

tatyana61 [14]2 years ago

6 0

The formula for frequency is f = 1/T where f is frequency and T is period in seconds.
You have you period which is 0.008s and that is all you will need to solve or frequency in a wave:
f = 1/2
f = 1/0.008s
f = 125Hz

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Answer:

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2 years ago

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miskamm [114]

The centripetal force experienced by the towel is 55 N.

The given parameters;

angular speed of the washing machine, ω = 200 rpm
radius of the machine' drum, r = 0.5 m
mass of the towel, m = 0.25 kg

The centripetal force experienced by the towel spinning along the walls of the drum is calculated as follows;

Fc = mrω²

where;

<em>Fc is the centripetal force</em>

<em>ω is angular speed in rad/s</em>

The angular speed in rad/s is calculate as;

$\omega = \frac{200 \ rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1\min}{60 \ s} \\\\\omega = 20.95 \ rad/s$

The centripetal force experienced by the towel is calculated as;

$F_c = mr\omega ^2\\\\F_c = 0.25 \times 0.5 \times (20.95)^2\\\\F_c = 54.9 \ N \ \approx 55 \ N$

Thus, the centripetal force experienced by the towel is 55 N.

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3 years ago

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The deviation of a value (x) from the mean of the sample divided by the standard deviation (s)of the sample is known as the "z"

Ugo [173]

Answer:

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Explanation:

z-score gives an idea of how far the value of data is from the mean point. Basically is the measure of a standard deviation below or above the mean.

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Z-score or value is calculated by the expression given below:

$z = \dfrac{x-\mu}{\sigma}$

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3 years ago