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An oil film (n = 1.48) floating on water (n = 1.33) is illuminated by white light at normal incidence. The film is 274 nm thick. The reflected light will be predominately a single color. Find the wavelength of the dominant visible light among the reflected light. Take the range of visible light to be 400-700 nm. Answer in units of nm.
A simple harmonic oscillator has an amplitude of 3.5cm and a max speed of 28cm/s. What is its speed when the displacement is 1.75cm
A cat runs along a straight line (the x-axis) from point A to point B to point C. The distance between points A and C is 5.00 m, distance between points B and C is 10.0 m, and the positive direction of x axis points to the right. The time to run f..
One gallon of paint (volume = 3.78 x 10-3 m3) covers an area of 25.0 m2. What is the thickness of the fresh paint on the wall
A step-down transformer (turns ratio = 1:7) is used with an electric train to reduce the voltage from the wall receptacle to a value needed to operate the train. Evaluate what is the current in the primary coil
A solution has a hydronium-ion concentration of 1.0 x 10-5 mol per liter. What is the hydroxide-ion concentration of this solution
A 31 cm diameter coil consists of 21 turns of cylindrical copper wire 3 mm in diameter. Determine the current in the loop
Starting from rest at t = 0, a wheel undergoes a constant angular acceleration. When t = 1.9 second, the angular velocity of the wheel is 3.7 rad/s. Compute through what angle does the wheel rotate in the interval t = 0 to t = 35s
A body is suspended vertically from an ideal spring of spring constant 3.1 N/m. The spring is initially in its relaxed position. What is the maximum kinetic energy of the body
Water (density = 1.00 x 103 kg/m3) flows at10.0 m/s through a pipe with radius 0.030 m. What is the radius of the pipe on the second floor
A heater runs on an AC voltage of 120 V and draws a power of 26 W. If this heater were run instead on a DC voltage of 70 V, how much current would flow through the heater? Hint: The heater can be modeled as a resistor.
A sound wave, traveling at 353m/s, is emitted by the foghorn of a tugboat. How far away is the reflecting object
You are holding a 5 kg dumbbell straight out at arm's length. Assuming your arm is 0.62 m long, what torque is the dumbbell exerting on your shoulder
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