Matter Waves: If an electron has a wavelength of 0.123 nm, what is its kinetic energy, in electron-volts? This energy is not in the relativistic region. (melectron = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A. 19.8 eV
B. 60.2 eV
C. 80.4 eV
D. 99.5 eV
E. 124 eV
Answer: D
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A) 2.0 m/s B) 3.0 m/s C) 4.0 m/s D) 5.0 m/s
A baseball is struck by a batter at an angle such that it reaches its maximum height at the location of the pitcher – and just grazes the top of the pitcher’s head (at an elevation of 1.50 m above the launch point of the baseball). The pitcher is a horizontal distance of 20.0 m from the point at which the ball was struck. What was the launch angle for the baseball?
a. 
b. 
c. 
d. 
e. 
f. 
What aspect of Mercury's interior structure is used to explain the presence of its magnetic field?
What will be an ideal response?
During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the change in internal energy?
A. zero B. 2.5 J C. 5.0 J D. 10 J