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How does the number of lines in the emission spectrum for an element compare with the number of lines in the absorption spectrum? In the Bohr model of the hydrogen atom, exactly what is quantized?
A child operating a radio-controlled motor car on a dock accidentally steers it off the edge. the cars displacement 1.1s after the dock has a magnitude of 7.0m. what is the cars speed at the instant it drives off the edge off the dock?
Ramon has a coherent light source with wavelength 579 nm. What is the minimum width of the screen if Ramon wants to display four interference maxima
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North, What is the ratio of the magnitude of E2 to the magnitude of E1
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
A 615-kg racing car completes one lap in 14.3 sec. arounda circular track with a radius of 50.0 m. What force must the track exert onthe tires to produce this acceleration
Describe how you could use your sound data for the car's resting frequency f0 and measured frequency fF while moving toward the policeman to calculate the speed of an approching car (vs) in order to check the reliability of the radar gun.
In a circuit of two lamps in series, if the current through one lamp is 2 A, what is the current through the other lamp
A Tube, of length 30 cm, is closed at one end, and produces a sound at the fundamental frequency of 270 Hz. Calculate the length of the second tube
We saw in class that a 3-dimensional ideal gas obeys pV = 3/2E, where p is the pressure, V is the volume, and E is the internal energy (average kinetic energy). Derive the corresponding formula for a two-dimensional ideal gas, i.e. a collection of..
A raindrop falls at a constant speed. How much work is done byair resistance as the drop falls 250 m? (The raindrop's mass is 3 x10^-5 kg)
A block with a mass of 25 kg is hung midway between two pulleys, with a rope connecting a hook at the top of the block to each of the two pulleys. If the pulleys are 45 cm apart, how far below the level of the pulleys does the top of the 25 kg mas..
A horizontal force of 280 Nis exerted on a 2.0 kg discus as it is rotated uniformly in ahorizontal circle (at arm's length) of radius 1.00 m. Calculate the speed of the discus
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