We can ignore an Einstein solid’s zero-point energy because
A. it is zero.
B. it never changes in any thermal interaction.
C. it is insignificant compared to the solid’s total energy.
D. it is just a quantum-mechanical effect.
E. other (specify).
B. it never changes in any thermal interaction.
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A car travels around an unbanked curve at 17 m/s. If the static friction coefficient between the tires and the road is 0.45, what is the minimum radius curve that the car can take at this speed without slipping?
A. 65 m B. 3.9 m C. 15 m D. 8.1 m
If the velocity of an aircraft is doubled, the kinetic energy of the aircraft is also doubled
a. True b. False Indicate whether the statement is true or false
The heat of fusion for lead at 327.0 
22.9 kJ/kg and the specific heat of lead is 0.130 kJ/kg
What is the energy needed to melt 100 grams of lead starting at 0
?
A. 3.56 kJ B. 4.23 kJ C. 6.54 kJ D. 7.02 kJ E. 7.76 kJ
Four charges of equal charge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 ?C, a = 30. mm, and b = 40. mm?
What will be an ideal response?