Answer:
(a) Frequency will be equal to
(b) Wavelength will be equal to
Explanation:
Velocity of light
(A) We have given wavelength of light
We have to find frequency corresponding to this wavelength
We know that velocity of light is equal to
(b) We have given frequency of vibration
We have to find wavelength corresponding to this frequency
We know that velocity of light is equal to
joules=watts times seconds
600x10 = 6000joules
Answer:
vf²=vi²+2a∆x
Explanation:
The third equation of motion gives the final velocity of an object under uniform acceleration given the distance traveled and an initial velocity: v 2 = v 0 2 + 2 a d . v^2=v_0^2+2ad. v2=v02+2ad. The graph of the motion of the object.
Density equals mass over volume. density= 196/(68-45)
density=4.4 g/cm3
Answer: 25 m/s
Explanation:
To calculate the speed of a wave, simply multiply its wavelength and its frequency (given that you are provided with the two variables).
This makes sense, since the unit for speed (m/s) matches that of the product of wavelength (m) and frequency (Hz). Keep in mind that one Hz is equivalent to one inverse second (
s
−
1
or
1
s
).
If you multiply m (the unit for wavelength) with
1
s
(the unit for frequency), you will get m/s, the unit for speed.
Now multiply!
.5 m * 50 Hz = 25 m/s
25 m/s is your final answer!