If you throw a stone horizontally from the top of a cliff, one second after leaving your hand its vertical distance below the top of the cliff is
A) 5 m.
B) 10 m.
C) 15 m.
Answer: A
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The shape of the magnetic field around a bar magnet is very close to the shape of the electric field around a single positive charge
a. True b. False Indicate whether the statement is true or false
Carbon dioxide is removed from the air by ______________
Fill in the blank(s) with correct word
What can we conclude when we see a region of a planet that is not as heavily cratered as other regions?
A) There is little volcanic activity to create craters. B) The planet is rotating very slowly and only one side was hit by impactors. C) The planet formed after the age of bombardment and missed out on getting hit by leftover planetesimals. D) The surface in the region is older than the surface in more heavily cratered regions. E) The surface in the region is younger than the surface in more heavily cratered regions.
Spherical Mirrors: The focal length of a concave mirror has a magnitude of 20 cm. What is its radius of curvature?
A. 10 cm B. 40 cm C. -40 cm D. 20 cm E. -20 cm