From the edge of a roof top you toss a green ball upwards with initial speed v0 and a blue ball downwards with the same initial speed. Neglect air. When they reach the ground below
A) the green ball will be moving faster than the blue ball.
B) the blue ball will be moving faster than the green ball.
C) the two balls will have the same speed.
C
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_____ is absorbed by water vapor in Earth's lower atmosphere
A) Long-wavelength infrared radiation B) Long-wavelength ultraviolet radiation C) Radio wave radiation D) X-ray radiation
Radioactive Decay: A radioactive substance with a half-life of 3.0 days has an initial activity of 2400 Bq. What is its activity after 6.0 days?
A. 1200 Bq B. 1800 Bq C. 600 Bq D. 300 Bq E. 150 Bq
In a certain region, the electric potential due to a charge distribution is given by the equation V(x,y) = 2xy - x2 - y, where x and y are measured in meters and V is in volts. At which point is the electric field equal to zero?
A) x = 0.5 m, y = 1 m B) x = 1 m, y = 1 m C) x = 1 m, y = 0.5 m D) x = 0.5 m, y = 0.5 m E) x = 0 m, y = 0 m
What are the standard time and date (time of day and day of month) in Kyoto, Japan (135°E, 35°N), when it is 11 A.M. EST on March 10 in Washington, D.C. (39°N, 77°W)?