A race car goes around a curve at 50 m/s. The radius of the curve is 400 m. What is the car's acceleration?
6.25 m/s2
Physics & Space Science
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A population inversion is a circumstance within a laser system in which there are ______ atoms with their electrons in an upper excited state than in a specific preferred lower state
a. more b. fewer c. the same amount d. ionized
Physics & Space Science
A monochromatic light beam is incident on a barium target, which has a work function of 2.6 eV. If a stopping potential of 1.2 V is required, what is the light beam photon energy?
a. 2.6 eV b. 1.4 eV c. 1.2 eV d. 3.8 eV e. 0.7
Physics & Space Science
At the ends and along the sides of a glacier, the sediment deposits may form ridges known as
a. deltas. b. levees. c. drifts. d. moraines.
Physics & Space Science
A rock that is readily attacked by chemical weathering is
A) limestone. B) granite. C) basalt. D) gneiss.
Physics & Space Science