# Physics QUESTIONS

When the number of electrons striking the anode of an X-ray tube increases, the [removed]of the emitted X-rays increases.

When the speed of electrons striking the anode of an X-ray tube increases, the [removed]^{a0} of the emitted X-rays increases.

An X-ray tube emits X-rays with a wavelength of 1.00 x 10^{-11} m. Calculate the photon energy, in joules, that the emitted X-rays possess.

E = [removed]^{a0} x 10[removed]^{a1} joules

An X-ray tube emits X-rays with a wavelength of 1.00 x 10^{-11} m. Calculate the energy, in electron volts, that the X-rays possess.

[removed]^{a0} x 10[removed]^{a1} ev

An X-ray tube emits X-rays with a wavelength of 1.00 x 10^{-11} m. Determine the energy, in electron volts, possessed by the incident electrons.

[removed]^{a0} x 10[removed]^{a1} ev

An X-ray tube emits X-rays with a wavelength of 1.0 x 10^{-11} m. Calculate the potential that must be applied across the X-ray tube to give each incident electron its energy.

[removed]^{a0} x 10[removed]^{a1} ev

Calculate the highest frequency X-rays produced by 8.00 **Â·** 10^{4} ev electrons.

[removed]^{a0} x 10[removed]^{a1} Hz

A television tube can accelerate electrons to 2.00 **Â·** 10^{4} ev. Calculate the wavelength of emitted X-rays with the highest energy.

= [removed]^{a0} x 10[removed]^{a1} m

Calculate the energy, in electron volts, of X-rays that have a frequency of 1.0 x 10^{19} Hz.

[removed]^{a0} x 10[removed]^{a1} ev

Calculate the de Broglie wavelength of a 5,100 kg truck traveling at 82 kph.

= [removed]^{a0} x 10[removed]^{a1} m

Calculate the de Broglie wavelength of an electron traveling at 1.0 x 10^{7} m/sec. (m_{e} = 9.1 Â· 10^{-31} kg).

= [removed]^{a0} x 10[removed]^{a1} m

Calculate the approximate momentum change in a particle of mass 1.7 Â· 10^{-27} kg (a proton), initially at rest, whose position (x) is located to within 1.00 x 10^{-4} m.

mv = [removed]^{a0} x 10[removed]^{a1} kg Â· m/sec.

Calculate the uncertainty of the velocity of a particle confined to a space of 1.0 x 10^{-9} m if the particle is an electron.

(m_{e} = 9.1 Â· 10^{-31} kg)

v = [removed]^{a0} x 10[removed]^{a1} m/sec.

Calculate the uncertainty of the velocity of a particle confined to a space of 1.0 x 10^{-9} m if the particle is a proton.

(m_{p} = 1.7 Â· 10^{-27} kg)

v = [removed]^{a0} x 10[removed]^{a1} m/sec.

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