Thursday
December 5, 2013

# Posts by Art

Total # Posts: 45

Spanish
28. c 29. b 31. c 32. b 33. a

math
what level math is this for?

physics
A runner X ran the mile race in 4.25 sec. Another runner Y requires 4.55 sec to run the distance. If they start out together and maintain their normal speeds, how far apart will they be at the finish of the race?

Physics
The moon is 384,000 km from the earth and makes 1 revolution in 27.3 days. Find its angular and linear speeds in its orbit.

Physics
A runner X ran the mile race in 4.25 sec. Another runner Y requires 4.55 sec to run the distance. If they start out together and maintain their normal speeds, how far apart will they be at the finish of the race?

Physics
A stone falls from a railroad overpass which is 36 ft high into the path of a train which is approaching the overpass with a uniform speed. If the stone falls when the train is 50 ft away from the overpass and the stone hits the ground just as the train arrives at that spot, h...

Physics
An automobile has a speed of 60kph. When the brakes are applied, it slows to 15 kph in 4 sec. What is its acceleration? How far does it travel the 4 sec.?

Physics
How high will a body rise that is projected vertically upward with a speed of 100ft/s? How long will it take for the body to reach its maximum height?

Physics
The force of repulsion of 2 electrons is 3*10-15Newtons. How far apart are the 2 electrons?

Physics
A wheel has its speed increased from 120 to 240 rev/min in 20 sec. a.) What is the angular acceleration? b.) How many revolutions of the wheel are required?

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