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1. In the photoelectric effect, why does the existence of a cutoff frequency speak in favor of the photon model and against the wave model of light?
2. How does a photon differ from a material particle?
3. If you have two conducting plates with a potential difference V across, and you have an electron sitting just outside the positive plate, how much kinetic energy do you need to give the electron so that it travels across the distance between the plates and barely touches the negative plate before turning back?
Determine the participation factor of the modes present and obtain a complete solution for an arbitrary time variation of the applied force.
A brick of mass 1.19 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.42 m. What is the maximum speed the brick can have
assuming the average person has a mass of 68kg? Do not avoid the weight of the logs. Assume the specific gravity of wood is 0.6.
In organic chemistry, how do you determine the strength of bases based on their structure?
A 255 kg piano slides 4.2 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40 Figure 6-36
A beam of unpolarized light shines on a stack of five ideal polarizers, set up so that the angles between the polarization axes of pairs of adjacent polarizers are all equal. The intensity of the transmitted beam is reduced from the intensity of the ..
Light bulb 1 operates with a filament temperature of 2700 Kelvin, whereas light bulb 2 has a filament temperature of 2100 Kelvin. Obtain the ratio of the filament areas of the bulbs
Given that an astronomical unit (AU) is 1.50 x 10^11 m and a light-year is 9.46 x 10^15 m, how many astronomical units are in a light-year?
a 72 nc charge is located at x3.00 meters on the x axis and an 8.0nc charge is located at x7.0 meters. at what point on
A model-train transformer plugs into 120-V ac, What voltage is present across the tracks
If an experiment were done with a bow and arrow, when shooting the arrow what motion would it make. A diagram would be helpful. What causes the arrow to move horizontal, and what causes the arrow to move vertical? And why do the 2 motions (horizontal..
An engine puts out 5 kW of power at an efficiency of 35.0%. If 8850 J of energy is expelled each cycle find the energy absorbed in each cycle
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