A bullet is fired from ground level with a speed of 150 m/s at an angle 30.0° above the horizontal at a location where g = 10.0 m/s2. What is the vertical component of its velocity after 4 seconds?
A) 150 m/s
B) 35 m/s
C) 130 m/s
D) 75.0 m/s
E) 37.5 m/s
B
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Meteors are
a) asteroids or comet debris that passes into Earth's atmosphere and burns up b) a group of rocky objects between the orbits of Jupiter and Saturn c) comets that are vaporized when they pass very close to the Sun d) comets that escape the Solar System without being vaporized by the Sun e) a group of rocky objects between the orbits of Mars and Jupiter
At a certain elevation, the ________ , the air becomes saturated and water-vapor molecules ________
A) lifting condensation level; condense to mark the base of cloud formation B) equilibrium level; condense to mark the base of cloud formation C) lifting condensation level; stabilize and mark the upper limit of cloud formation D) equilibrium level; stabilize and mark the upper limit of cloud formation
First Law of Thermodynamics: A cyclic process is carried out on an ideal gas such that it returns to its initial state at the end of a cycle, as shown in the pV diagram in the figure. If the process is carried out in a counter-clockwise sense around the enclosed area, as shown on the figure, then the magnitude of the enclosed area represents 
A. the heat that flows out of the gas. B. the work done on the gas. C. the heat added to the gas. D. the work done by the gas.
____ orbit is one in which an object orbiting Earth has an orbital period equal to the rotation period of Earth
a. A daily b. A lunar c. An epicycle d. A geosynchronous e. An open