Projectile Motion: A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the horizontal distance to the point where the football hits the ground if we neglect air resistance?
A. 20 m
B. 35 m
C. 18 m
D. 60 m
E. 30.0 m
Answer: B
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The area in the Sun's atmosphere located above the chromosphere (1,500-10,000 km) where the temperature rises dramatically is called the:
A) photosphere. B) corona. C) solar wind. D) transition zone. E) convection zone.
If you took a Ferris wheel ride in space while sitting on a bathroom scale, your weight
A. would increase and decrease just as on Earth. B. would be constant and larger than zero for the entire ride. C. would start large and continually decrease. D. would start small and continually increase. E. would be zero for the entire ride.
The evolution of a "high mass star" is different from the evolution of smaller stars because these stars ____
a. do not generate strong stellar winds b. rotate faster c. have stronger magnetic fields d. can ignite carbon fusion e. are never in binary systems
Which of the processes on a monatomic ideal gas given below will result in the temperature of the gas increasing? W is the work done by the gas
a. a process where Q = W b. a process where Q = –2W c. a process where Q = 2W d. None of the above will increase the temperature of the gas.