Compare the de Broglie wavelength of a baseball moving at 90.0 miles per hour (40.2 m/s) to that of a proton moving at 1.30×107 miles per hour (5.81×106 m/s) and a bullet with a speed of 700 miles per hour (313 m/s). Which region of the electromagnetic spectrum are each of these wavelengths near? A. Ultraviolet 10-8 to 10-7 meters B. X-ray 10-11 to 10-8 meters C. Gamma ray 10-16 to 10-11 meters D. Smaller than 10-20 meters. Cannot detect wave-like properties. Only particle-like behavior will be observable. Particle Mass (kg) Velocity (m/s) Wavelength (m) Region baseball 0.140 40.2 ___ proton 1.67×10-27 5.81×106 ___ bullet 1.90×10-3 313
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Physics, 22.06.2019 00:10
The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?
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Physics, 22.06.2019 14:20
4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
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Physics, 22.06.2019 23:00
Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?
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Compare the de Broglie wavelength of a baseball moving at 90.0 miles per hour (40.2 m/s) to that of...
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