Potential: If the electric potential at a point in space is zero, then the electric field at that point must be
A. negative.
B. zero.
C. uniform.
D. positive.
E. impossible to determine based on the information given.
Answer: E
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A nonrelativistic proton is confined to a length of 2.0 pm on the x-axis
What is the kinetic energy of the proton if its speed is equal to the minimum uncertainty possible in its speed? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s, mproton = 1.67 × 10-27 kg) A) 5.1 eV B) 51 eV C) 510 eV D) 5100 eV E) 51,000 eV
Earthquake P waves are
a. neither longitudinal nor transverse. b. transverse. c. longitudinal. d. sometimes longitudinal and sometimes transverse.
In a nonlinear elastic material, the ratio of the increment in applied stress to the increment in strain measured at the total strain is the _____________modulus.
Fill in the blank(s) with the appropriate word(s).
You slam on the brakes of your car in a panic, and skid a certain distance on a straight, level road. If you had been traveling twice as fast, what distance would the car have skidded, under the same conditions?
A) It would have skidded 4 times farther. B) It would have skidded twice as far. C) It would have skidded times farther. D) It would have skidded half as far. E) It is impossible to tell from the information given.