Answer:
Explanation:
Given that,
A radio wave transmits 38.5 W/m² of power per unit area.
A flat surface of area A is perpendicular to the direction of propagation of the wave.
We need to find the radiation pressure on it. It is given by the formula as follows :
Where
c is speed of light
Putting all the values, we get :
So, the radiation pressure is .
Because AC emf is a sine wave
Answer:
Explanation:
Given
Frictional Force is balanced by force due to car acceleration
Frictional force
Frequency = 1/time period = 1/0.05 = 20s^-1.
Answer:
54 × 5/18 = 15m/s
Explanation:
to convert km/hr to m/s you multiply by 5/18