Assuming you are sitting still as you take this quiz, how would you draw your own worldline on a spacetime diagram?
A) as a straight, vertical line
B) as a straight, horizontal line
C) as a diagonal line
D) You would not have a worldline since you are not moving.
A
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A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v0x = 60.0 m/s and v0y = 175 m/s, as shown in the figure
The projectile rises and then falls into the sea at point P. The time of flight of the projectile is 40.0 s, and it experiences no appreciable air resistance in flight. What is the height of the cliff? What will be an ideal response?
Polls and quizzes are examples of animated content.
Answer the following statement true (T) or false (F)
If the Moon rises at sunset, then its phase must be
A) third quarter. B) waning gibbous. C) full. D) waxing crescent. E) new.
A company that produces pulsed gas heaters claims their efficiency is approximately 90%. If an engine operates between 250°C and 25°C, what is its maximum thermodynamic efficiency?
a. 83% b. 65% c. 43% d. 90% e. 56%