Answer: a) Observation
b) observation
c) observation
d) observation
e) inference
f) inference
g) inference
h) inference
Explanation:
observation: The photosphere is made mostly of hydrogen and helium,The photosphere emits mostly visible light,The corona is hotter than the photosphere, The Sun emits neurtrinos
inferences: The Sun generates energy by fusing hydrogen into helium,The core temperature is 10 million k, The convection zone is cooler than the radiation zone,The composition of the photosphere is the same as that the gas cloud that have birth to our solar system.
Answer:
3.82 ms
Explanation:
The period of a wave is equal to the reciprocal of the frequency:
where f is the frequency.
In this problem, f = 262 Hz, so the period if this sound wave is
Honestly I don’t really know in my opinion
Work = (force) x (distance)
Work = (300 N) x (30 m) = <em>9,000 joules</em>
Power = (work) / (time)
Power = (9,000 joules) / (3 sec) = <em>3,000 watts</em>
Oops. I didn't use the mass of the 145-kg object.
Probably because I didn't need it.
