Answer:
The answer is CD, just had the same question myself.
The first option is true, water vapor helps keep the Earth's heat from escaping into space.
Answer:
Lilly's speed is two times John's speed.
Explanation:
m = Mass
a = Acceleration
t = Time taken
u = Initial velocity
v = Final velocity
The force they apply on each other will be equal
Hence, Lilly's speed is two times John's speed.
Answer:
the 4 resistor wired in parallel is equal to 23.946ohm