An electron (m = 9.11 × 10^?31 kg) has a speed of 0.50c. Determine the difference between its relativistic kinetic energy and the kinetic energy calculated without considering relativity
a. 3.0 × 10^?15 J
b. 2.0 × 10^?15 J
c. 1.5 × 10^?15 J
d. 2.4 × 10^?15 J
e. 1.8 × 10^?15 J
d
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Rank the following five capacitors in the order of the magnitudes of the charges on their plates
(a) a 20-µF capacitor with a 4-V potential difference between its plates (b) a 30-µF capacitor with charges of magnitude 90 µC on each plate (c) a capacitor with charges of magnitude 80 µC on its plates, differing by 2 V in potential, (d) a 10-µF capacitor storing energy 125 µJ (e) a capacitor storing energy 250 µJ with a 10-V potential difference
1.e > a > b > d > c 2.e > d > a > b > c 3.c > b > a > d > e 4.b > a = c > d = eA hydrogen atom consists of a proton and an electron. If the orbital radius of the electron increases, the electric potential energy of the electron-proton system
A) increases. B) decreases. C) remains the same. D) depends on the zero point of the potential.
The standard unit of distance in the mks system is the
a. centimeter b. inch c. kilometer d. meter e. second
An object that is 3.4 mm tall is placed 25 cm from the vertex of a convex spherical mirror. The radius of curvature of the mirror has magnitude 73 cm
(a) How far is the image from the vertex of the mirror? (b) What is the height of the image? What will be an ideal response?