What is the acceleration of a bus that goes from rest to a speed of 50km/h in 10s?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?