All of the following are long-term risks associated with exposure to secondhand smoke EXCEPT:
A. increased risk of respiratory illness
B. increased risk of lung cancer
C. change in senses
D. increased risk of cardiovascular disease
This is the Correct Answer.
The mechanical energy consisting of potential and kinetic energy is:
0.001 x [ (acceleration of gravity x height) + (1/2) (speed)² ] .
Answer:
Both vectors have the same X and Y components therefore
the angle between the two vectors is zero
(B) is correct
B. The planets formed at the center of a collapsing spinning cloud of gas and dust
C. The sun and planets formed from a collapsing spinning cloud of gas and dust.
D. A comet hit the sun and sent off fragments the became the planets.
I'm pretty sure it's C?
Answer: C. The sun and planets formed from a collapsing spinning cloud of gas and dust.
Explanation:
The entire solar system was formed from solar nebula. A nebula is a cloud of dust and gases. When this cloud spins and contracts, a protostar is formed. The temperature rises and nuclear fusion kicks in forming a star. The rest of the matter forms planets and other celestial bodies of the star system. Similarly, the Sun was formed in solar nebula from collapsing of spinning cloud of dust and gas.