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You look through a Polaroid sheet at a 75 W light bulb 3.00 m away.
(a) Find the intensity of the light you see.
(b) Next you place a second Polaroid sheet in front of the first sheet with an angle of 41.0° between the two transmission axes. What intensity do you observe?
A 2.2 kg block of ice initially at a temperature of -20°C is immersed in a very large amount of liquid nitrogen (LN) at a temperature of -196°C, and the nitrogen and H2O are allowed to come to thermal equilibrium.
Mercury has a mass MP = 3.18 x 1023 kg, an orbital period T = 88.0 days, Find the total energy (potential and kinetic) of Mercury in its orbit about the Sun
An archer shoots an arrow with a velocity of 30 m/s at an angle of 20 degrees with respect to the horizontal. What is the initial speed of the apple
A muscle builder holds the ends of a massless rope. At the center of the rope, a 7.9 kg ball is hung as shown. What is the tension in the rope
You have a 1.5 m long copper wire. You want to make an N-turn current loop that generates a 2.4 mT magnetic field at the center, What will be the diameter of your coil
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 2.36 m/s. What is the height of the hill
A spacecraft is observed to be at a location m relative to an origin located on a nearby asteroid, find the unit vector in the direction of the average velocity
Two microscopes are placed one on top of the other. They are in contact at one end but a hair separates them at the other end. determine the thickness of the hair?
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
IP Water flows through a horizontal tube of diameter 3.0cm that is joined to a second horizontal tube of diameter 2.0cm. Find the speed of flow in the first tube in m/s
A girl is jumping on a trampoline and reaches a maximum height of 3.1 meters, h=3.1m. She has a mass of m = 53kg. what is the spring constant k in N/m of the trampoline
How much work done against force of gravity
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