A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. Which object reaches the bottom of the incline first?
A) The hoop
B) The disk
C) Both reach the bottom at the same time.
D) It depends on the angle of inclination.
E) It depends on the length of the inclined surface.
B
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The creation of ____ require(s) that a young hot star (T 25,000 K) be relatively nearby
a. Emission nebulae b. HI regions c. Molecular clouds d. The cool gas of the interstellar medium e. 21 cm radiation
Impedance: A series ac circuit has a resistance of 4.0 ?, a capacitive reactance of 26 ?, and an inductive reactance of 17 ?. Find the impedance of the circuit.
A. 9.8 ? B. 31 ? C. 13 ? D. 47 ?
Determine the approximate value for the convective heat transfer coefficient for normal butane boiling with a superheat temperature of 10ºF by using Equation 10-56. The saturation temperature of normal butane is 2430F at atmospheric pressure.
Two isotopes have the same mass number
a. True b. False Indicate whether the statement is true or false