What is the peak (maximum) power dissipated by a 150 W light bulb attached to a 120 V rms ac line?
A. 301 W
B. 212 W
C. 150 W
D. 106 W
E. 75.0 W
A. 301 W
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The position of a ball rolling in a straight line is given by x=2.0-3.6t +1.1 t2, where x is in meters and t in seconds.
(a) Determine the position of the ball at t=1.0s, 2.0s and 3.0s. (b) What is the average velocity over the interval t=1.0s to t=3.0s? (c) What is its instantaneous velocity at t=2.0s and at t=3.0s?
The New Horizons probe carries what kind of physical time capsule?
A) a small engraved plaque B) a gold-plated record containing pictures, multilingual greetings and music C) a DVD containing pictures D) this probe does not carry a physical time capsule but a message will eventually be uploaded to its computers
A series of n uncharged concentric shells surround a small central charge q. The charge distributed on the outside of the nth shell is
a. ?nq. b. ?(ln n)q. c. +q. d. +(ln n)q. e. +nq.
What is the lowest value for n of a shell that can contain a g electron?
a. 5 c. 3 b. 4 d. 6