Answer:
t = space ÷ speed
t=89,5m ÷ 343 m/s=0,260932945s
Answer:
Explanation:
For Doppler effect in radar the formula is as follows
Δf = f₀ x 2v /c
Δf is change in frequency in reflected wave , f₀ is original frequency , v is velocity of source and c is velocity of right .
Δf = 2460 Hz , f₀ = 1.0525 x 10¹⁰ Hz , v = ? c is velocity of light .
2460 = 1.0525 x 10¹⁰ x 2 v / 3 x 10⁸
2460 = 105.25 x 2 v / 3
v = 2460 x 3 / (105.25 x 2 )
v = 35 .06 m /s .
(b)
Since the observed frequency is less , the source is moving away from the observer .
option (2) is correct .
Answer: 79.0 x 10²³ kg
Explanation:
The weight of any mass, is given by the value of the attractive force that the mass of the planet exerts on it, and is given by the Newton's Universal Law of Gravitation:
Fg = G m Mp / rp²
If Fg = 25.74 N, we can solve for Mp, as follows:
Mp = Fg . rp² / G m = 25.74 N. (7.3 10⁶)² m² / 6.67259. 10⁻¹¹ N.m²/ kg². 2.6 kg
Mp= 79.0 x 10²³ kg.
The only correct answer is the 201.2
Answer:
The percentage is 
Explanation:
From the question we are told that
The axis is is at 
Generally the of intensity light emerging from the first polarizer is mathematically represented as
Where 
is the intensity of unpolarized light
Now the light emerging from the second polarizer is mathematically represented as
Now the light emerging from the third polarizer is mathematically represented as
Now the percentage of the intensity of light that emerged with respect to the intensity of the unpolarized light is
