By what factor does the volume of a cube increase if the length of the edges are doubled?
A. 2
B. 4
C. 6
D. 8
C. 6
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If h = Planck's constant, the de Broglie wavelength of a particle of linear momentum p and kinetic energy KE is given by which of the following formulas?
A. p/h B. KE/h C. h/KE D. h/p E. h.p
A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30° from its initial direction of motion. What is the x component of the velocity of the 1.0-kg object just after the collision?
A. 3.7 m/s B. 3.4 m/s C. 1.5 m/s D. 2.4 m/s E. 4.1 m/s
A stone is thrown with an initial speed of 15 m/s at an angle of 53° above the horizontal from the top of a 40-m building. If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?
a. 30 m/s c. 26 m/s b. 24 m/s d. 29 m/s
Water freezes at atmospheric pressure and a temperature of
A) 0 degrees Celsius. B) 32 degrees Fahrenheit. C) about 273 kelvin. D) all of the above E) none of the above