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Chapter 37: Q. 7 (page 1081)
A ceramic cube on each side radiates heat at . At what wavelength, in , does its emission spectrum peak? Assume .
The wavelenght will be
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An alpha particle (a bare helium nucleus with (q=+2e) accelerates across a 100 V potential difference, starting from rest. What is the particle鈥檚 kinetic energy in eV when it reaches the negative electrode? This question requires no mathematics beyond what you can do in your head.
To initiate a nuclear reaction, an experimental nuclear physicist wants to shoot a proton into a 5.50-fm-diameter 12C nucleus. The proton must impact the nucleus with a kinetic energy of 3.00 MeV. Assume the nucleus remains at rest.
a. With what speed must the proton be fired toward the target?
b. Through what potential difference must the proton be accelerated from rest to acquire this speed?
An alpha particle (a bare helium nucleus with q=+2e) accelerates across a 100 V potential difference, starting from rest. What is the particle鈥檚 kinetic energy in eV when it reaches the negative electrode? This question requires no mathematics beyond what you can do in your head.
What are the wavelengths of spectral lines in the Balmer
series with and ?
FIGURE Q37.6 shows a magnetic field between two parallel, charged electrodes. An electron with speed passes between the plates, from left to right, with no deflection. If a proton is fired toward the plates with the same speed ,will it be deflected up, deflected down, or pass through with no deflection? Explain.
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