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Q. What is the smallest thickness of a soap film (n = 1.41) that would appear black if illuminated with 450 nm light? Assume there is air on both sides of the soap film.
Q. A force F = (2. N/m^2)x^2i is applied to a particle initially at rest in the xy plane. Find the work done by this force on the particle and the final speed of the particle as it moves along a path that is (b) in a straight line from point (1.9 m, 1.9 m) to point (5.3 m, 6.4 m). The given force is the only force doing work on the particle.
What work is done by the electric forc. begin from rest, a boat increases its speed to 4.00 m/s with constant acceleration. What is the boat's average speed.
A 70 kg man (rad=0.25m) standing on a 10-kg disc (rad=0.4m) with his arms extended (rad=0.9m) holding a 15-kg weight in each hand. What is the rotational inertia of man with weights.
A loudspeaker on a tall pole broadcasts sound waves equally in all directions. If the sound output is 7.0 W, at what distance from loudspeaker is the sound intensity level 85.7 dB.
A bumper car with mass m1 = 115kg is moving to the right with a velocity of v1 = 4 m/s. A second bumper car with mass m2 = 95 kg is moving to the left with a velocity of v2 = -3.7 m/s. The two cars have an elastic collision. Suppose the surface is fr..
Given that 12g of carbon combines with 16g of oxygen to form carbon monixide, how various grams of carbon monoxide can be made from 48g of carbon and 48g oxygen.
The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of approximately
How much time is necessary to catch the car
What is speed of the command module
A swimmer runs horizontally off a diving board with a speed of 3.58 m/s and hits the water a horizontal distance of 1.79 m from the end of the board. How high above the water was diving board.
What travel time is required for the landing
What is new angular speed of the merry-go-round
Find the mass flow rate in through the vent in question #1 using the following well-known relationship for the mass flow into an opening:
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