To test the hypothesis that plants grow faster in green light, a student set up 3 of the same type of plants. she placed the first plant under a green light, the second plant under a regular light bulb, and the third plant under a red light. what is the dependent variable in this experiment?

Aparticle of mass m is projected with an initial velocity v0 in a direction making an angle α with the horizontal level ground as shown in the figure. the motion of the particle occurs under a uniform gravitational field g pointing downward. (a) write down the lagrangian of the system by using the cartesian coordinates (x, y). (b) is there any cyclic coordinate(s). if so, interpret it (them) physically. (c) find the euler-lagrange equations. find at least one constant of motion. (d) solve the differential equation in part (c) and obtain x and y coordinates of the projectile as a function of time. (e) construct the hamiltonian of the system, h, and write down the hamilton’s equations (canonical equations) of motion.

In science and physics what is the standard unit of measure for speed?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.