A meter stick is moving toward you with a speed of 0.85c. What is its length?
A)
zero
B)
0.47 m
C)
0.53 m
D)
0.74 m
E)
1.0 m
C
You might also like to view...
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3sin(2x)cos(5t), where x is in m and t is in s. What is the wavelength of the interfering waves?
a. 3.14 m b. 1.00 m c. 6.28 m d. 12.0 m e. 2.00 m
Electric power is transmitted over long distances at high voltage because
A) electricity moves faster at higher voltage. B) the lines can be on taller poles. C) lightning does more damage. D) there is less power lost. E) electricity moves slower at higher voltage.
The systematic arrangement of all known elements is known as
A. the periodic table of elements. B. the angular momentum chart. C. the chemical dictionary of Arrhenius. D. the metric conductance/reflectance table.
It takes 10. J of energy to move 2.0 C of charge from point A to point B. What is the potential difference between points A and B?
A) 20. V B) 0.20 V C) 5.0 V D) 0.50 V E) zero