Physics, 06.07.2019 22:00, carolina1636
Atoy friction car is propelled forward from rest by a girl's hand which causes it to reach a forward velocity of 3.5m/s in 0.4 seconds. it is then rreleased and later stops in 5.6 seconds. a) what is the acceleration with which the car speeded up? b)what is the acceleration with which the car slowed down? c) how far did the toy car travel?
Answers: 1
Physics, 22.06.2019 12:00, louieknown
Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
Answers: 1
Physics, 23.06.2019 04:31, redrhino27501
The radioactive isotope of lead, pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. if 1 gram of this isotope is present initially, how long will it take for 80% of the lead to decay? (round your answer to two decimal places.)
Answers: 2
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