An electron and an alpha particle (a helium-4 nucleus) each have the same non-relativistic speed. Which has the greatest kinetic energy, and which has the shortest de Broglie wavelength?
a. the alpha particle, the alpha particle
b. the alpha particle, the electron
c. the electron, the alpha particle
d. the electron, the electron
a
Physics & Space Science
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An incandescent bulb emits what kind of spectrum?
A. emission-line B. blueshifted C. continuous D. absorption-line E. redshifted
Physics & Space Science
If our Sun belonged to Population II, it is unlikely that ________ planets could orbit it
Fill in the blank(s) with correct word
Physics & Space Science
Newton's Second Law in 1 Dimension: What magnitude net force is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s?
A. 444 N B. 1620 N C. 3240 N D. 4360 N E. 11,800 N
Physics & Space Science
At what point is the Moon farthest away from Earth?
a. apogee
b. perigee
c. umbra
d. penumbra
e. prominence
Physics & Space Science