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Barium has a work function of 2.48 eV. What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 380 nm?
Find the maximum and minimum transmittance of the interferometer? What is the value of the reflecting finesse and of the coefficient of finesse ?
Assuming the piano strong has too low a pitch, what percent increase in tension is needed to bring the string into tune? You answer should be given to the nearest tenth of a percent.
How long does an organ pipe have to be if it is closed at one end, open at the other, and has a fundamental frequency of 107 Hz? Assume that the speed of sound in air is 343 m/s. Your answer should
A hydrogen atom undergoes a transition from the n = 12 state to the n = 5 state. During this transition, does the atom absorb or emit a photon?
The biggest problem I'm having is figuring out sigma-au and sigma-fu for the thermal utilization factor. Also the correction factor (k_eff).
For spontaneous decay of a parent nucleus into daughter nuclei, the parent nucleus must have a ______mass than the sum total mass of the daughter nuclei.
An object is placed 10.5 cm in front of a lens of focal length 5.0 cm. Another lens of focal length 4.0 cm is placed 1.7 cm behind the first lens. (a) Where is the final image (b) What is the overal
Derive a condition for mechanical equilibrium in terms of the change in entropy of each subsystem with respect to its volume. Use the fundamental equation of thermodynamics to relate this quantity t
A rocket is flying level at standard sea level conditions and the Mach number indicated is .985. Calculate the speed of the rocket in miles per hour.
If the particle's velocity is perpendicular to the magnetic field at all times, what is the magnitude if the magnetic force exerted on the particle?
Assume that the inside of the tube is a force-free region and that the particle makes elastic reflections at the tube ends. Use Schrondinger's equation find the ground-state energy for the particle
A compact disc undergoes 30 revolutions as it accelerates uniformly from rest to 5 revolutions per second. What is the angular acceleration of the disk?
The magnification of the final image produced by this lens combination. the object is 10 cm in front of the first lens. And note that I'm asking about the final image, not the intermediate image.
A contact lens is made of plastic with an index of refraction of 1.58. The lens has an outer radius of curvature of +2.03 cm and an inner radius of curvature of +2.42 cm. What is the focal length of
The top of a swimming pool is at ground level. If the pool is 2.28 m deep, how far below ground level does the bottom of the pool appear to be located for the following conditions?
Halley's comet has a period of approximately 76 years, and it moves in an elliptical orbit in which its distance from the Sun at closest approach is a small fraction of its maximum distance. Estimat
What is the velocity and the depth of the object at time 3 s after it was launched. show steps and diagram (free body).
A potential difference of V=24.0 V is applied across two capacitors in parallel, with capacitances 36.0 nF and 48.0 nF. What is the magnitude of the charge on one of the plates of the 36.0-nF capaci
How strong is the magnetic field (in T) at a point midway between the two wires, on the vertical line that connects the two points of closest approach?
A baseball is hit from 1 m above the ground and attains a maximum height of 21 m and horizontal distance of 100 m. A fielder can catch the ball between the ground and 3 m. Over what horizontal dista
The electrons in the rod have moved until they are in equilibrium. One end of the rod is negatively charged, while the other is positively charged. How strong is the electric field (in V/m) inside t
Bonnie and Clyde are sliding 390 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 435 N of force while Bonnie pulls forward
What is the magnitude of the force exerted by the hail on a 13.00 m x 12.00 m flat roof during the storm ? Ignore the bounce of the hail on impact.
If the coefficient of kinetic friction between the block and wall is 0.487, find the work done by F.