Water undergoes viscous flow through two pipes with the same pressure difference between the ends. Pipe 1 has three times the diameter as pipe 2. Pipe 1 has 2 times the length of pipe 2. If the flow rate through pipe 1 is 0.400 
then what is the flow rate through pipe 2?
A. 
B. 
C. 
D. 
E. 
D.
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The total mass of a galaxy tends to be only slightly larger than the visible mass
Indicate whether the statement is true or false
The saying "The present is the key to the past" is a simple way to state the basic geologic concept called ______________
a. presentarianism b. prepostanarism c. uniformitarianism d. formitarianism
Monochromatic light from a He-Ne laser (l = 632.8 nm) is incident on a diffraction grating containing 5 000 lines/cm. Determine the angle of the first-order maximum
a. 18.4° b. 39.2° c. 14.6° d. 27.7° e. 13.9°
The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.120 m) cos (pt/16). What is the maximum net force on the mass as it oscillates?
a. 0.98 × 10^-3 N c. 3.0 × 10^-3 N b. 7.4 × 10^-3 N d. 4.7 N