Physics, 24.12.2019 10:31 gracerhodes5364
An experiment is performed to test the effect of three different types of water on the growth of a plant. the test is done by using tap water, distilled water, and carbonated water. choose the statement below that describes the tap water in this experiment.
a. the tap water is a controlled variable for all plants.
b. the tap water is the control group for comparison.
c. tap water is the only test condition that will cause measurable changes in the dependent variable, plant growth.
d. tap water is one of the three test conditions of the independent variable, the type of water.
Answers: 3
Physics, 21.06.2019 22:30
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.
Answers: 1
Physics, 22.06.2019 23:40
Which type of energy is transferred by convection currents?
Answers: 2
An experiment is performed to test the effect of three different types of water on the growth of a p...
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