Physics, 02.12.2019 20:31 ashley110608
A1400 kg car moving at 6.6 m/s is initially traveling north in the positive y direction.
after completing a 90° right-hand turn to the positive x direction in 4.9 s, the inattentive operator drives into a tree, which stops the car in 430 ms.
what is the magnitude of the impulse on the car :
(a) due to the turn and (b) due to the collision?
what is the magnitude of the average force that acts on the car (c) during the turn and (d) during the collision?
(e) what is the angle between the average force in (c) and the positive x direction?
Answers: 1
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Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
A1400 kg car moving at 6.6 m/s is initially traveling north in the positive y direction.
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