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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?
The left face of a bioconvex lens has a radius of curvature of 10.3 cm, and the right face has a radius of curvature of 15 cm. Calculate the focal length of the lens
A 40-N crate rests on a rough horizontal floor. A 12- N horizontal force is then applied to it. find the magnitude of the frictional force on the crate
A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months, how fast must you travel
A certain cylindrical drum is 3 meters in height. It filled with with water. Atmospheric pressure is 10^5 Pa, and the density of water is 1000 gl/m^3. What is the water pressure at the bottom of the barrel
A bullet of mass mb = 16 g is fired with a speed of 260 m/s at a target that is a sheet of metal (mass mt = 410 g). what is the angular velocity of the target plus bullet just after the bullet hits
Graphically determine the resultant of the following three vector displacements: (1) 24 m, 36? north of east; (2) 18 m, 37? east of north; Determine the resultant direction
Light of wavelength 500 nm illuminates a 0.5 mm diameter hole. A screen is placed 6.0 m behind the slit. What is the width of the central maximum on the screen in mm
An 84 kg skier is being pulled by a boat with a force of 240 N causing the skier to accelerate at 1.4 m/s^2. Find out the drag force on the skier.
Atoms in a solid are in continuous vibrational motion due to thermal energy, What is the approximate period of oscillation of a typical atom
Two children, with masses 35kg (on the left) and 44kg (on the right), sit at opposite ends of a 3.9mlong seesaw with mass 22kg, With the seesaw horizontal, find the net torque on the seesaw
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
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