The time between the successive crusts will give the time period of the wave.
So, the time period, T of the given wave is 0.2 s.
The frequency of a wave is the reciprocal of its time period. That is,
Frequency, ν = 
= 
= 5 Hz
Thus, the frequency of the given travelling periodic wave is 5 Hz.
Answer:
11.87 ms⁻¹
Explanation:
You can use the kinematic equation
v² = u² + 2as
Where v = final velocity
u = initial velocity
a = acceleration
s = displacement
v² = 9² + 2×1.5×20
So you get v = 11.87 ms⁻¹
Answer:
3. increases with an increase in temperature.
Explanation:
The air more water vapor at higher temperatures because at higher temperatures the air expands and the inter-molecular space increases so the room for water molecules increases.
Warm air keeps the water molecules warm and prevents them from condensing.
The air can hold the moisture only upto its saturation quantity after which the precipitation occurs in the form of rain, snow, hail, sleet etc.
Answer:
electric flux = 177.625 N-m²/C
Explanation:
given data
angle = 45°
diameter = 4 m
electric field E = 20 N/C
to find out
electric flux
solution
we know electric flux formula that is
electric flux = E × A × cosθ ..............1
here A is area that is
Area = πd²/4 = π(4)²/4 = 12.56 m²
now put all value in equation 1
electric flux = 20 × 12.56 × cos45
electric flux = 177.625 N-m²/C
Both move with constant speed
