When boiling your breakfast eggs while in the mountains, to compensate for altitude you should
A) use a hotter flame.
B) boil the eggs for a shorter time.
C) boil the eggs for a longer time.
D) none of the above
Answer: C
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According to the equation E = mc2, an object turns into energy when it reaches the speed of light
A) True B) False
The size of a quasar can be measured by ________
Fill in the blank(s) with correct word
Time Dilation: A particle physicist observes cosmic rays creating a new particle high in the atmosphere, and the speed of this particle is measured at 99.7% the speed of light. It is unstable, and is observed to decay in an average 37.0 ?s. If this particle were at rest in the laboratory, what would be its average lifetime?
A. 2.9 µs B. 18 µs C. 5.3 µs D. 12 µs E. 4.3 µs
At t = 0, a particle is located at x = 25 m and has a velocity of 15 m/s in the positive x direction. The acceleration of the particle varies with time as shown in the diagram. What is the velocity of the particle at t = 5.0 s?
?
?
A. +15 m/s B. ?15 m/s C. +30 m/s D. 0 E. ?1.2 m/s