Which of the following is the best example of a proper hypothesis?
water will flow faster through tightly packed soil than through loosely packed soil.
i think there is no effect on hearing if you listen to loud music for only three hours a day.
grapes taste better than apples because grapes are sweeter.
if different types of leaves are exposed to low temperatures, then they will change colors.

What are the three ways that an object can accelerate

Asher cycles 12 miles in 16 hours. what is his speed?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct