A diatomic molecule consists of two point masses, m1 and m2, separated by a distance r. Find the moment of inertia through the center of mass about an axis perpendicular to the molecular axis
a. m1m2r2/(m1 + m2)
b. [(m1m2/m1) + m2]r2
c. (m1 + m2)/m1m2r2
d. (m1 + m1)r2 /m1m2
e. m1m2r2/m1
a
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Latent Heats: A metal has a latent heat of fusion of 2.32 × 104 J/kg, a specific heat of 128 J/kg ? K, and a melting point of 228°C. A 30-g pellet of this metal at 16°C hits a solid wall and comes to a complete stop. What would the speed of the pellet have to be in order for it to melt completely when it hits the wall, assuming that all of its kinetic energy is transformed into heat within the pellet?
A. 207 m/s B. 215 m/s C. 232 m/s D. 273 m/s E. 317 m/s
Plate boundary faults occur where plates are
A) colliding B) forming C) separating D) sliding past each other
A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the momentum during the collision are correct? (There could be more than one correct choice.)
A) The momentum of the truck is conserved. B) The momentum of the car is conserved. C) The car and the truck must undergo the same change in speed. D) The momentum of the car and the momentum of the truck are each conserved. E) The momentum of the car-truck system is conserved, but the momentum of each one separately is not conserved.
A resistance of 55 ?, a capacitor of capacitive reactance 30 ?, and an inductor of inductive reactance 30 ? are connected in series to a 110-V rms, 60-Hz power source. What rms current flows in this circuit?
A) 2.0 A B) less than 2.0 A C) more than 2.0 A D) none of the given answers