A student conducted an experiment to observe the affect of sunlight on plant growth. What is the independent variable of this experiment? a) the colour of the watering cans
b) the amount of water each set of plants receives
c) whether or not the plants are exposed to sunlight
d) the number of planes used in the experiment

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

How are calculation for velocity and speed different

In the first law of thermodynamics, triangle e=q-w, what does q stand for