An object weighing 4.00 N falls from rest subject to a frictional drag force given by Fdrag = bv2, where v is the speed of the object and What terminal speed will this object approach?
A) 1.78 m/s
B) 3.42 m/s
C) 1.15 m/s
D) 2.25 m/s
E) 0.75 m/s
C
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_____ is the transmission of DNA to offspring
a. Reproduction b. Development c. Homeostasis d. Inheritance e. Differentiation
The angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A) The photo will seem to show only one star rather than two. B) The two stars will appear to be touching, looking rather like a small dumbbell. C) The stars will not show up at all in your photograph. D) You will see two distinct stars in your photograph.
The graph of position versus time is given for a train. What can you say about the train’s motion from time t1 to time t2?
A. it is moving with constant velocity
B. it is not moving
C. it is moving with a constant negative velocity
D. it is accelerating
The Lyman series of hydrogen corresponds to electron transitions from higher levels to n = 1 . What is the longest wavelength in that series? (h = 6.63 × 10^-34 J×s. The ground state of hydrogen is at –13.6 eV.)
a. 91.4 nm c. 456 nm b. 273 nm d. 122 nm