Which of the following has the longer wavelength?
A) a low-energy electron
B) a high-energy electron
C) both the same
D) none of the above
Answer: A
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Which of the following is not suitable for studying biological material?
(a) An optical microscope (b) A high-voltage TEM (c) A STM (d) An AFM
An electron is accelerated from rest through a potential difference. After acceleration the electron has a wavelength of 880 nm
What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg, e = 1.6 10-19 C) A) 1.9 × 10-6 V B) 1.7 × 10-6 V C) 2.2 × 10-6 V D) 2.5 × 10-6 V
A uniform rod (mass = 2.0 kg, length = 0.60 m) is free to rotate about a frictionless pivot at one end. The rod is released from rest in the horizontal position. What is the magnitude of the angular acceleration of the rod at the instant it is 60° below the horizontal?
a. 15 rad/s2 b. 12 rad/s2 c. 18 rad/s2 d. 29 rad/s2 e. 23 rad/s2
If the first maximum of one circular diffraction pattern passes through the center of a second diffraction pattern, the two sources responsible for the pattern will appear to be a single source
Indicate whether the statement is true or false