A string is wrapped tightly around a fixed frictionless pulley that has a moment of inertia of 0.0352 kg ? m2 and a radius of 12.5 cm. The string is pulled away from the pulley with a constant force of 5.00 N, causing the pulley to rotate
What is the speed of the string after it has unwound 1.25 m if the string does not slip on the pulley? A) 2.09 m/s
B) 2.36 m/s
C) 1.18m/s
D) 3.18 m/s
E) 4.95 m/s
B
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Which of the following best describes the evolutionary track of the most massive stars?
A) vertically left, then straight down B) horizontal right C) horizontal right, then a clockwise loop D) diagonally to lower right, then vertical, then horizontal left E) horizontally right, diagonal to lower left, then horizontal right
A 12.0-V battery (potential source) is connected across a 6.00-µF air-filled capacitor. (a) How much energy can be stored this way? (b) How much excess charge is on each plate of the capacitor?
What will be an ideal response?
3.0 moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol?K) and a molar heat capacity at constant pressure of 6.9 cal/(mol?K)
starts at 300 K and is heated at constant pressure to 320 K, then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process? A) 710 cal B) -720 cal C) 0.00 cal D) 120 cal E) -120 cal
Taurus the Bull is a(n)
a. star. b. asterism. c. galaxy. d. constellation.