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A diffraction grating produces an interference pattern on a wall. The 2nd order maximum is positioned at an angle of 32.0 degrees for monochromatic light of wavelength λ= 500nm. How many lines per meter does the grating have?
A 2 kg rock is released from rest at a height of 29 m. neglect air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights: 20m; 15m; 5m; 9m.
A test rocket is launched, starting on the ground, from rest, by accelerating it along an incline with constant acceleration "a", what is the position vector when the rocket is at its highest point
Party stores sell small tanks containing 40 g of helium gas. If you use such a tank to fill 0.012 m^3 foil balloons, how many balloons can you expect to fill
A 145 g copper bowl contains 205 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5.40 g being converted to steam.
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.06 × 106 m/s, Find the centripetal acceleration of the electron
What is the change in Marys potential energy. Find the final speed of the particle.
Two photons have different frequencies f1 and f2 . If the ratio of their momenta is 22.5, what is the ratio of their frequencies
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C) and in boiling allyl alcohol (97°C). What value of absolute zero does the calibration yield
A small drop of oil is suspended motionless in the air by a uniform electric field that is directed upward and has a magnitude of N/C, What is the mass of the drop
It takes 2.80 s for a small ball with a mass of 0.120 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released
A 5 g bullet with an initial velocity of 95 m/s lodges in a block of wood and comes to rest at a distance of 6 cm. assume the bullet undergoes a constant negative acceleration; it slows at a constant rate. How much time does it take for bullet to ..
A wire of length L = 15 is bent into a semi circle . If the total charge on the wire is -45nC, determine the electric field at the center point of the semicirlce.
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