A projectile is projected from the origin with a velocity of 20.0 m/s at an angle of 60.0 degrees above the horizontal. What is the maximum height of the projectile?
A. 8.40 m
B. 9.50 m
C. 10.9 m
D. 15.3 m
E. 20.2 m
D. 15.3 m
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Why do elements fuse only in a star's core?
A. Only the core spins fast enough. B. The fuel settles to the core. C. Only the core is hot enough for fusion. D. The statement is incorrect. Fusion occurs just below the surface. E. None of these choices is correct.
According to the first law of thermodynamics, the sum of the heat gained by a system and the work done on that same system is equivalent to which of the following?
a. entropy change c. temperature change b. internal energy change d. specific heat
When a body moves with uniform acceleration, the net force on it is zero
Indicate whether the statement is true or false
The first law of thermodynamics is basically a special version of the law of ______________
Fill in the blank(s) with correct word