Efollowing items are positioned in sequence: a source of a beam of natural light of intensity i0, three ideal polarizers a, b, and c; and an observer. polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. the axis angle of polarizer a is set at 0° (vertical), and the axis angle of polarizer c is set at 50°. polarizer b is set so that the beam intensity at the observer is a maximum. what is the axis angle settings of polarizer b?

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?