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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.
Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.
Find the change in internal energy using first law of thermodynamics.
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
A rectangular container measuring 24 cm 48 cm 55 cm is filled with water. What is the mass of volume of water in kilograms.
A superhero flies 287 meters from the top of a tall building at an angle of 17 degrees below the horizontal. What is the vertical component of the superhero's displacement? Answer in units of meters. The horizontal is 274.459 meters and the vertical ..
With what tension should a rope with length 3.00m and mass 0.135kg be stretched for transverse waves of frequency 43.0Hz to have a wavelength of 0.720m. What torque does friction exert even as this wheel is slowing down.
Two long thin parallel wires 13.0 cm apart carry 32 A currents in the same direction. Determine the magnetic field at point P, 12.0 cm from one wire and 5.0 cm from the other.
A 120 granite cube slides down a 45 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 210 steel cube at rest.
A rowboat crosses a river with a velocity of 3.51 mi/h at an angle 62.5° north of west relative to water. The river is 0.8 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore.
A straight horizontal wire carries a current of 6.50 μA. An electron is moving above the wire the direction parallel to it and in the same direction as the conventional current in the wire.
The effects of the spin of the earth
What is the Bens kinetic energy
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