It's really hard to make out the gibberish at the end, where the list of choices should be.
Here are the three equations for the relationships among the wavelength, frequency, and wave-speed, for ANY wave:
-- Speed = (wavelength) x (frequency)
-- Wavelength = (Speed) / (frequency)
-- Frequency = (Speed) / (wavelength)
Notice that you only have to remember any ONE of these. Then you can always get the other ones by multiplying or dividing both sides by the same quantity.
If you want to remember all of them, here are the short forms:
V = L · f
L = V / f
f = V / L
Hydrogen and oxygen are being formed if an <span>electric current is passed through water and bubbles start forming.
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Answer: 2.4×10^-3 v/m
Explanation: distance between plates of capacitor (d) =5.0×10^-3m
Potential difference between plates (v) = 12v
Force on electronic charge (f) = 3.8×10^-16 N
Strength of electric field (E) =?
The formulae that relates potential difference, eoectiic field strength and distance between plates is given as
v = Ed
By substituting the parameters, we have that
12 = E × 5.0×10^-3
E = 12/ 5.0 × 10^-3
E = 2.4×10^-3 v/m
Answer:
1.029
Explanation:
1.0090 can also be looked at as "1.009"
0.02 can also be looked at as "0.020"
I think of it as 20+9 which is 29. There for your answer should be 1.029. There are no measurement rules applying to this equation since they are both in centimeters. So you don't have to convert anything.
The ration of output work to input work expressed as a percentage is called <u>Efficiency</u>.
