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You set up an experiment with two polarizer screens on an optical bench and collect data for the intensity of the light at the detector as you vary the relative angle between the transmission axes of the polarizers. You create a plot of light intensity (in lux) vs cos2 ? with your data and get a linear fit for your graph gives a slope of 118.2 ± 1.144 and a y-intercept of 15.85 ±1.381.
What is the intensity of the light source you used in your experiment? (lux)
______ +/- _______ lux
What is the ambient light in the room as you took your data?
_____ +/- ______ lux
Consider a copper wire (mass density 8.9 g/cc, resistivity 1.7E-8 ohm-m) with a diameter of 0.43 mm, How many meters long is this wire
On a cool morning, when the temperature is 16 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40 mi on the freeway, temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show.
Another student bumps the field-producing device so that the electric field is now (23.7 N/C)i + (15.5 N/C)k, What is the new electric flux through the hoop
Evaluate with the strength of the earth's gravity at its surface, how much weaker is gravity at a distance of 10 earth's center.
A crate of mass 56 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person, what is the crate's acceleration
During heavy rain, a rectangular section of a mountainside measuring 2.8 km horizontally, 0.80 km up along the slope, What is the mass of the mud sitting above an area of 4.0 m2 in that section
Explain by how much upward force does each support exert on the beam? (Enter your answer for support 1 first, followed by your answer for support 2.)
two plates of radius R are separated by a distance 2h.the top plate rotates with velocity w. find the velocity as a function of radius r and and height z
Two very small objects, whose charges are +1.0 and -1.0 C, Find the magnitude of the attractive force that either charge exerts on the other
Katherine is attempting a biceps curl with a 100 N dumbbell. She is standing upright, and her forearm is horizontal. What torque is created by the dumbbell about the elbow joint
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
A car starts from rest and accelerates at a rate of 2m/s^2 until it reaches the speed fo 30m/s. find number of revolution each wheel completes up to this point
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