A certain unstable particle has a mean lifetime of 1.52 × 10-6 s. This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the particle
An average such particle is observed by a scientist on Earth to travel 342 m in its lifetime. What is the speed of the particle relative to Earth? (c = 3.00 × 108 m/s)
A) 0.821c
B) 0.681c
C) 0.600c
D) 0.551c
E) 0.335c
C
You might also like to view...
In choosing between sound waves and radio waves, which has the greater speed?
A) sound wave B) radio wave C) both the same D) need more information
The semimajor axis of an ellipse is
a. the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse. b. half the length of the shortest diameter of the ellipse. c. half the length of the longest diameter of the ellipse. d. the distance between the two foci of the ellipse. e. the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse.
A solar panel measures 80 cm × 57 cm. In direct sunlight, the panel delivers 3.1 A at 15 V. If the intensity of sunlight is 1 000 W/m2, what is the efficiency of the solar panel in converting solar energy into electrical energy?
a. 20% b. 15% c. 10% d. 5% e. 8%
Which two renewable energy resources provide the largest amount of energy today?
A) hydroelectric and wind B) hydroelectric and biomass C) active solar and photovoltaics D) photovoltaics and wind E) biomass and active solar