Physics, 29.01.2020 13:54 alyssakerr17
Ahot iron ball of mass 200 g is cooled to a temperature of 22°c. 6.9 kj of heat is lost to the surroundings during the process. what was the initial temperature of the ball? (ciron = 0.444 j/g°c)
a) 23°c
b) 78°c
c) 100°c
d) 155°c
Answers: 1
Physics, 21.06.2019 18:00, savannahvargas512
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Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
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Ahot iron ball of mass 200 g is cooled to a temperature of 22°c. 6.9 kj of heat is lost to the surro...
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