Answer:
They both are part of electromagnetic radiation.
Radio waves have longer wavelength than visible waves.
Radio waves have lower frequency than visible waves.
Explanation:
Answer:
Explanation:
The work increased the potential energy
W = PE = mgh = 40(9.8)(15) = 5880 J(oules)
Answer:
a) The acceleration is 2.14 m/s^{2}
b) The distance traveled by the car is 65.61 m
c) The average velocity is 18.75 m/s
Explanation:
Using the equations that describe an uniformly accelerated motion:
a) 
b) 
c) 
Given data :
Velocity of radar
signal, v = Velocity of light = 3 x 10^8 m/s
Greatest distance
between Venus and Earth d1 = 0.47 AU = 0.47 AU (a.5 x 10^11 m / 1 AU) =
7.1x10^10 m
Closest distance between
Venus and Earth, d2 = 0.28 AU = 0.28 AU (1.5 x 10^11 m / 1 AU)= 4.2 x 10^10 m
The time take by radar signal
to travel from Earth to Venus and back when Venus is brightest is calculated as
T1 = 2d1/v = 2(7.a x
10^10 m / 3 x10^8 m/s) = 473 s
The time taken by radar
signal to travel from Earth to Venus and back when Venus is closest is
calculated as
<span>T2 = 2d1/v = 2 (4.2 x
10^10 m) / 3 x 10^8 m/s = 280 s</span>
