Two ideal parallel-plate capacitors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitance
A) C/2. B) 4C. C) 2C. D) C.
C
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Uncertainty Principle Using Momentum and Position: Suppose that the speed of an electron traveling 1.0 km/s is known to an accuracy of 1 part in 10,000 (that is, within 0.01%). What is the minimum uncertainty in the position of this electron? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
The clouds of Jupiter are primarily composed of liquid hydrogen
Indicate whether the statement is true or false
A roadway for stunt drivers is designed for racecars moving at a speed of 40 m/s. A curved section of the roadway is a circular arc of 230 m radius
The roadway is banked so that a vehicle can go around the curve with the friction force from the road equal to zero. At what angle is the roadway banked? A) 35° B) 37° C) 33° D) 31° E) 29°
How do the jovian planet interiors differ?
A) All have about the same amount of hydrogen and helium but the proportion of rocks is greater in those planets closer to the Sun. B) All have cores of about the same mass, but differ in the amount of surrounding hydrogen and helium. C) The composition changes from mostly ammonia in Jupiter and Saturn to mostly methane in Uranus and Neptune. D) The composition changes from mostly hydrogen in Jupiter and Saturn to mostly helium in Uranus and Neptune. E) The core mass decreases with the mass of the planet.