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Chapter 37: 37.2 Q7. (page 1081)
A ceramic cube on each side radiates heat at . At what wavelength, in , does its emission spectrum peak? Assume.
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What are the wavelengths of spectral lines in the Balmer series with n = , , and ?
A newspaper delivery boy is riding his bicycle down the street at m/s. He can throw a paper at a speed of m/s. What is the paper’s speed relative to the ground if he throws the paper (a) forward, (b) backward, and (c) to the side?
Event A occurs at space-time coordinates (300m, 2μs). a. Event B occurs at space-time coordinates(1200m, 6μs). Could A possibly be the cause of B? Explain. b. Event C occurs at space-time coordinates(2400 m, 8μs). Could A possibly be the cause of C? Explain
9. Electrons pass through the parallel electrodes shown in FIGURE EX37.9 with a Speedtowards left . What magnetic field strength and direction will allow the electrons to pass through without being deflected? Assume that the magnetic field is confined to the region between the electrodes.
Firecrackers A and B are 600 m apart. You are standing exactly halfway between them. Your lab partner is 300 m on the other side of firecracker A. You see two flashes of light, from the two explosions, at exactly the same instant of time. Define event 1 to be “firecracker A explodes” and event 2 to be “firecracker B explodes.” According to your lab partner, based on measurements he or she makes, does event 1 occur before, after, or at the same time as event 2? Explain.
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