Lucy decides to conduct an investigation to determine the effect of sunlight on plant growth. she divides a group of plants in half, designating one group as group a and the other as group b. lucy puts the plants in group a in a sunny room and the plants in group b in a dark room. then she measures the growth of each plant for one week. which component of lucy’s investigation is the dependent variable?

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?