Where are most heavy elements made?
A) in the interstellar medium
B) in stars and supernovae
C) in the Big Bang, when the universe first began
D) none of the above
E) all of the above
B
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The airspeed of an airplane is 200 km/h. When it is caught in a 200-km/h crosswind, its speed across the ground below is
A) 0 km/h. B) 200 km/h. C) 283 km/h. D) 400 km/h. E) 1600 km/h.
The transmitted intensity of an unpolarized beam of light passing through a polarizer is one half of the value of the original intensity
Indicate whether the statement is true or false
A hockey puck slides off the edge of a table with an initial velocity of 20.0 m/s. The height of the table above the ground is 2.0 m. What is the magnitude of the vertical component of the velocity of the puck just before it hits the ground?
A) 20.0 m/s B) 6.26 m/s C) 12.5 m/s D) 19.6 m/s E) 21 m/s
The Sun and the Moon are both on an observer's overhead meridian during what phase of the Moon?