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notka56 [123]
3 years ago
14

I don't understand how to find the frequency and period of wavelengths. Can anyone help me?

Physics
1 answer:
nordsb [41]3 years ago
3 0

Frequency of a wave =

                 (speed of the wave) divided by (wavelength)
or
                 (1) divided by (period of the wave) .


Period of the wave =

                   (wavelength) divided by (speed of the wave)
or
                   (1) divided by (frequency of the wave) .
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What is the force of a lead ball that starts with a momentum of 7 kg*m/s and end with a momentum of 22 kg*m/s over a time of 31
Gwar [14]

Answer:

F = 0.483 N

Explanation:

Initial momentum, P_i= 7\ kg-m/s

Final momentum, P_f= 22\ kg-m/s

Time, t = 31 s

We need to find the force of a lead ball. We can use here the impulse momentum theorem.

\text{Change in momentum}=F\times t

F is force

P_f-P_i=Ft\\\\F=\dfrac{P_f-P_i}{t}\\\\F=\dfrac{22-7}{31}\\\\F=0.483\ N

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8 0
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AveGali [126]

-- <u><em>Current is measured in amps.</em></u>  (You can use any symbol you want to represent current, but the most common one is " I ", not "Δ".)

-- <u><em>The relationship between current, voltage, and resistance is mathematically defined by Ohm's Law. </em></u>

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(When solving for Resistance in a circuit and both voltage and current are known values, the equation I =V*R is not true, and not the way to solve it.)  <u><em>If the resistance is what you're looking for, then the equation to use is  </em></u><u><em>R = V / I</em></u><u><em> .  </em></u>

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6 0
3 years ago
Read 2 more answers
Which countries have high productivity, but are not among the top 10 for human development? Check all that apply.
trasher [3.6K]

Answer:

Belgium

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Explanation:

These are the ones that are in the High Productivity chart, but not in the HDI chart

8 0
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