Physics, 08.03.2021 22:00 nuhaminbruk
Students in a middle school science class are working in pairs to experiment with pendulums. Their teacher, Ms. Oreski, has asked them to answer this question: What one or more things determine how fast a pendulum swings? She also suggests three factors they might study in their experimentation: a pendulum's weight, its length, and the force with which it has been pushed. Each pair has 2 feet of string and various objects that can be tied to the bottom of the string. Each pair also has a few sheets of paper on which to record various hypotheses and observations. Does this task impose a reasonable cognitive load?
Answers: 2
Physics, 22.06.2019 03:00
Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system
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Physics, 22.06.2019 04:30
Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?
Answers: 2
Physics, 22.06.2019 05:40
Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.
Answers: 3
Physics, 22.06.2019 09:50
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
Answers: 1
Students in a middle school science class are working in pairs to experiment with pendulums. Their...
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