A hunter points a rifle horizontally and holds it 3.30 m above the ground. The bullet leaves the barrel at 325 m/s and experiences no significant air resistance. The acceleration due to gravity at this location is 9.80 m/s2
(a) How long does it take for the bullet to strike the ground? (b) How far horizontally does it travel?
(a) 0.821 s (b) 267 m
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Regular atoms did not show up in the universe until when?
What will be an ideal response?
3.0 moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol?K) and a molar heat capacity at constant pressure of 6.9 cal/(mol?K)
starts at 300 K and is heated at constant pressure to 320 K, then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process? A) 710 cal B) -720 cal C) 0.00 cal D) 120 cal E) -120 cal
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
If 
and 
, what is the direction of the vector 
?
A. ?49°
B. ?41°
C. ?90°
D. +49°
E. +21°
Firewalking is similar to
A. water on a saucepan B. the space shuttle reentry C. an automobile air bag D. water skiing