The figure shows Atwood's machine, in which two containers are connected by a cord (of negligible mass) passing over a frictionless pulley (also of negligible mass). At time t = 0 container 1 has mass 1.4 kg and container 2 has mass 3.1 kg, but container 1 is losing mass (through a leak) at the constant rate of 0.16 kg/s. At what rate the acceleration magnitude of the containers changing at (a)t = 0 and (b)t = 3 s? (c) When does the acceleration reach its maximum value? (a) Number T0.04 Units m/s^3 (b) NumberTo.006 Units m/s^3 (c) Number 8.7 Units

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.