Jane has a mass of 50 kilograms. Express her mass in grams and hectograms
A) 50,000 g; 5,000 hg
B) 500,000 g; 500 hg
C) 500,000 g; 5,000 hg
D) 50,000 g; 500 hg
E) 50,000 g; 5,000 kg
D
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A small 175-g ball on the end of a light string is revolving uniformly on a frictionless surface in a horizontal circle of diameter 1.0 m
The ball makes 2.0 revolutions every 1.0 s. (a) What are the magnitude and direction of the acceleration of the ball? (b) Find the tension in the string.
Inserting a dielectric material between two charged parallel conducting plates, originally separated by air and disconnected from a battery, will produce what effect on the capacitor?
a. increase charge b. increase voltage c. increase capacitance d. decrease capacitance
How much current will be flowing through a 40.0 m length of cylindrical metal wire with radius 0.0 mm if it is connected to a source supplying 16.0 V?
The resistivity of this metal is 1.68 × 10-8 ? ? m. A) 68 nA B) 9.5 × 108 A C) 710 A D) 1200 A
The maximum mass of a white dwarf is ________
A) limitless; there is no theoretical limit to the maximum mass of a white dwarf B) about the mass of our Sun C) about 1.4 times the mass of our Sun D) about 3 times the mass of our Sun