B) amplitude A) crest C) Trough D) wavelength
Answer: A
Explanation:i took this one
Answer:
4.7 × 10⁵J
Explanation:
E = I * a * t
80% = 0.80
25cm = 0.25m
52cm = 0.52m
0.90h = 3240s
E = (0.80)(1400)(0.25 * 0.52)(3240)
= 4.7 * 10⁵J
I have no idea
sorry
good luck thooooo!!
Answer:
A star with 15 solar masses is too big to be a main-sequence star.
