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A ray of light strikes a plane mirror at a 45° angle of incidence. The mirror is then rotated by 23° in the clockwise direction, while the incident ray is kept fixed. (a) Through what angle does the reflected ray rotate? (b) What is the answer to part (a) if the angle of incidence is 51° instead of 45°?
In starting an exercise, a 1.61 m tall personlifts a 2.18 kg book on the ground so it is 2.26m above the ground. What is the work done bythe person's head
Using the idea of a dozen as an example again, if you have 2 dozen blocks and their total mass is 48 kg, What is the mass of a single molecule
The distance to a point source is increased by a factor of 7. By what factor does the intensity increase
A toaster uses a Nichrome heating wire. When the toaster is turned on at 20° C, the initial current is1.50 A. A few seconds later, the toaster warms up and the currentnow has a value of 1.24 A. The averagetemperature coefficient of resistivity for..
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
An archeological specimen containing 10.2 g of carbon has an activity of 1.6 Bq. How old (in years) is the specimen
A visitor to a lighthouse wishes to determine the height of the tower. She ties a spool of thread to a small rock to make a simple pendulum, What is the height of the tower
A nonreflective coating (n = 1.40) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of a specific wavelength (vacuum = 535 nm), find the minimum nonzero thickness that the coating can have.
A laser emits light at power 8.50mW and wavelength 633 nm. What is the magnitude of the corresponding force
In the field of psychology, what is meant by the term “catharsis”? According to Joseph Bruer, Illustrate what effect did “catharsis” have on the mental functioning of someone with a “troubled mind”? Why?
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 175 mi/h in 2.50 s. (a) Find the average acceleration of the plane. Correct: Your answer is correct. m/s2 (b) Assuming the acceleration is consta..
A proton is at the origin and an electron is at the point x=0.63nm, y=-0.45nm. Find the magnitude of electric force on the proton
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