A50.0-g hard-boiled egg moves on the end of a spring with force constant k=25.0n/m. it is released with an amplitude 0.300 m. a damping force fx=−bv acts on the egg. after it oscillates for 5.00 s, the amplitude of the motion has decreased to 0.100 m. calculate the magnitude of the damping coefficient b.

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)