, 22.06.2019 20:00 keke6361

# A130g arrow is shot straight up into the air with a speed of 22 m/s. it reaches a maximum height of 23.6939 m. find the initial kinetic energy. the acceleration of gravity is 9.8 m/s2. answer in units of j

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Physics, 21.06.2019 23:00
Athermometer is removed from a room where the temperature is 70Â° f and is taken outside, where the air temperature is 10Â° f. after one-half minute the thermometer reads 60Â° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) Â° f how long will it take for the thermometer to reach 30Â° f? (round your answer to two decimal places.)
Physics, 22.06.2019 16:20
How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit