If the maximum possible accuracy in measuring the velocity of a particle increases, the maximum possible accuracy in measuring its position will
A) increase.
B) decrease.
C) not be affected.
B
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The period of a periodic wave is 2.80 milliseconds. The frequency of the vibration motion of the wave is
A. 450 Hz. B. 437 Hz. C. 402 Hz. D. 357 Hz. E. 306 Hz.
The form of electromagnetic radiation most effectively blocked by a dark nebulae is ________
Fill in the blank(s) with correct word
A person pushes on a doorknob with a force of 5.00 N. The direction of the force is at an angle of 20.0° from the perpendicular to the surface of the door. The doorknob is located 0.800 m from axis of the hinges of the door
The door begins to rotate with an angular acceleration of 2.00 rad/s2. What is the moment of inertia of the door about the hinges? A) 4.28 kg?m2 B) 7.52 kg?m2 C) 1.88 kg?m2 D) 0.684 kg?m2 E) 2.74 kg?m2
How small a time interval is needed for a good calculation of instantaneous speed?
a. Instantaneous speed is calculated for a single instant. b. Three days is small enough. c. Use the longest interval of travel to avoid numerical error. d. An interval short enough so that the answer won't change very much if you use a shorter one. e. A single second is short enough.