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A thin film of oil (n = 1.21) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, the film reflects most strongly red light at 640 nm and reflects no light at 548 nm. What is the minimum thickness of the oil film?
On a clear day at a certain location, a 100 V/m vertical electric field exists near the Earth's surface. Compute the energy density of the electric field
A space vehicle is coasting at a constant velocity of 28.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.523 m/s2 in the +x direction.
The drawing shows three identical springs hanging from the ceiling
q1. the escape speed from a very small asteroid is only 26 ms. if you throw a rock away from the asteroid at a speed of
A thin film of glycerin (n=1.473) of thickness 524 nm with air on both sides is illuminated with white light at near normal incidence. What wavelengths will be strongly reflected
A 0.540-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 11.2 cm. Calculate the maximum value of its speed
A machine has an 650 g steel shuttle that is pulled along a square steel rail by an elastic cord (see figure below). The shuttle is released when the elastic cord has 16 N tension at a 45° angle
A 100-V rms, 60-Hz source is applied to a load impedance Z. The apparent power entering the load is a 140 VA at a power factor of 0.707 lagging. Calculate the complex power
A 20kg box slides up a 12m long incline at an angle of 30 degrees with the horizontal. What is the change in gravitational potential energy
0.5 kg of ice slowly melts. The latent heat of fusion is 80 kcal/kg. By how much does the entropy of the ice change
A 2.0 kg block is kicked up a wooden ramp that is inclined at a 30? angle to the horizontal. How long does the entire up and down trip take
A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 29.5°, find the critical angle for the liquid when surrounded by air
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