Arunner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 45 m. the runner starts the race at a constant speed. if she completes the 200 m dash in 21.6 s and runs at constant speed throughout the race, what is the magnitude of her centripetal acceleration (in m/s2) as she runs the curved portion of the track?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

What is the temperature in degrees celsius of a substance with a tempature of 49k

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.