Answer:
(a) 272.73 m
(b) 0.338 N/C
Explanation:
frequency, f = 1100 kHz = 1100 x 1000 Hz
E(t) = Eo Sin(2πft)
Eo = 0.62 N/C
(a) Velocity of light, c = 3 x 10^8 m/s
wavelength, λ = c / f = (3 x 10^8) / (1100000) = 272.73 m
Thus, the wavelength is 272.73 m.
(b) at t = 3.1 microsecond = 3.1 x 10^-6 s
E = Eo Sin (2 π ft)
E = 0.62 Sin (2 x 3.14 x 1100 x 10^3 x 3.1 x 10^-6)
E = 0.62 Sin (21.4148)
E = 0.62 x 0.5449 = 0.338 N/C
Thus, the electric field at t = 3.1 microsecond s 0.338 N/C.
1 newton =
the force that accelerates 1 kilogram of mass at the rate of 1meter per sec²
1 N = 1 kg-m/s²
Answer:b
Explanation:
use the process of elimination,
A is wrong because a lake doesnt mean it can send up seashells
D is wrong since you cant blow seashells up
When ice takes in energy, the water molecules inside of it start moving faster and creating friction, which causes heat. This heat makes the ice melt and turn into the liquid water. If you want to experience heat from friction, rub your hands together very fast. Hope this helped!
