Answer:
Electromagnetic waves transfer energy through vibrations of electric and in magnetic fields. For sound waves the energy is transferred through the vibration of air particles or particles of a solid. Waves also carry energy, the amount of energy they carry depends on their frequency and their amplitude. The more energy and the higher frequency amplitude, the more energy waves are ^‿^
The answer is (C) Diagram 3
The approach here is to decompose all directions into North and East and then do simple Cartesian addition of the obtained coordinates.
S1 = 399 E
S2 = 552 Km 58.5 deg west of north ;
= 552 cos (58.5) N - 552 sin (58.5) E
= 288.41 N - 470.65 E
S3 = 890 N
total S = (890 + 288.41) N + (399 - 470.65) E
S = 1178.41 N - 71.65 E
D =
D = 1180.58 Km
direction = atan(N/E) = -86.52 deg
means : 3.48 deg west of north
Answer: (1) 3.83x10^3 J
Explanation:
(1) Fx=(255N)cos60°
dx=30.0m
w=Fx dx =(255)(cos60°)(30.0m)