A 10,000-kg rocket blasts off from earth with a uniform upward acceleration of 2.00 m/s2 and feels no air resistance. The upward thrust force its engines must provide during this acceleration is closest to
A) 20,000 N.
B) 980,000 N.
C) 118,000 N.
D) 78,000 N.
C
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Dimensional Analysis: The kinetic energy K of an object of mass m moving with speed v is given by the formula K = 
mv2. The SI unit of kinetic energy is the joule, J. Use this formula to express the joule in terms of the fundamental SI quantities of mass, length, and time.
A. J = kg ? m/s B. J = kg ? m/s2 C. J = kg2 ? m2/s2 D. J = kg ? m2/s2
Coulomb's Law: Two equal and opposite charges are a small distance apart, forming an electric dipole. A positive charge +q is placed above these charges, as shown in the figure, equidistant from both of them. Which diagram below best gives the direction of the net force the dipole exerts on the charge +q?
A. 
B. 
C. 
D. 
When the first law of thermodynamics, Q = ?u + W, is applied to an ideal gas that is taken through an isothermal process,
A) ?u = 0. B) W = 0. C) Q = 0. D) ?P = 0.
Bree dips a pair of prongs onto a water surface and produces waves. When she dips more frequently the resulting waves
A) have shorter wavelengths. B) remain the same in wavelength. C) have longer wavelengths. D) move faster. E) none of the above