Two pools of water contain the same depth of water but one has a blue bottom and the other red. When looking into the pools from above,
A. the pools appear to have the same depth.
B. the blue bottom pool appears deeper.
C. it is not possible to tell which will appear deeper from this information.
D. the red bottom pool appears deeper.
Answer: D
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Projectile Motion: An athlete participates in an interplanetary discus throw competition during an Olympiad that takes place on a planet where the acceleration due to gravity is 9.7 m/s2. He throws the discus with an initial velocity of 20 m/s at an angle of 60° from the vertical. Neglecting air resistance and the height of the discus at the point of release, what is the range of the discus?
A. 21 m B. 60 m C. 36 m D. 40 m E. 32 m
A loop of gas following the magnetic field lines between sunspots' poles is:
A) a flare. B) a ray. C) a coronal hole. D) a prominence. E) a coronal mass ejection.
What is the name for the period of time it takes the Moon to circle the Earth once?
What will be an ideal response?
When a car goes around a curve of smaller and smaller radius, the centripetal force on it decreases
a. True b. False Indicate whether the statement is true or false