What is the maximum velocity of a photoelectron emitted from a surface with work function 3.5 eV when illuminated by 289 nm ultraviolet light? (melectron = 9.11 × 10^?31 kg, h = 6.63 × 10^?34 J?s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)
a. 3.75E+5 m/s
b. 5.31E+5 m/s
c. 7.28E+2 m/s
d. 8.62E+5 m/s
e. 1.60E+6 m/s
b
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Three masses are positioned as follows: 2.0 kg at (0, 0); 2.0 kg at (2, 0); and 4.0 kg at (2,1). Determine the coordinates of the center of mass
What will be an ideal response?
At an instant when a particle of mass 80 g has a velocity of 25 m/s in the positive y direction, a 75-g particle has a velocity of 20 m/s in the positive x direction. What is the speed of the center of mass of this two-particle system at this instant?
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