An electron travels under constant acceleration from a heated filament in an electron gun to the tip of the gun, where it is emitted. If the final speed of the electron is 
m/s, and the length of the gun from filament to tip is 1.25cm, what was the acceleration the electron underwent?
A. 
B. 
C. 
D. 
E. 
F. 
F.
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One difference between the light waves coming from a light bulb and water waves on a pond is that
A) light waves all have the same wavelength, while different water waves can have different wavelengths. B) different light waves have different speeds, while all water waves must have the same speed. C) light waves can show interference effects, while water waves cannot. D) light waves occur in three dimensions while water waves occur in two dimensions. E) All of the above.
A single circular (radius = R) loop of wire is located in the yz plane with its center at the origin. The loop has a clockwise current as seen from the point (+R, 0, 0). The direction of the magnetic field at the point
a. (0, 0, 0) is ?i and at the point (+R, 0, 0) is ?i. b. (0, 0, 0) is ?i and at the point (0, +2R, 0) is ?i. c. (0, 0, 0) is +i and at the point (+R, 0, 0) is +i. d. (0, 0, 0) is +i and at the point (0, +2R, 0) is +i. e. None of the above
Because of the ______________ zones formed by S and P waves as they travel through Earth, the outer core is thought to be a viscous liquid
Fill in the blank(s) with correct word
The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. What will be the initial decay rate, at t = 0 (in decays/s)?
a. 1.09 × 10^14 b. 1.8 × 10^-9 c. 5.6 × 10^8 d. 3.6 × 10^18 e. 3.6 × 10^17