The drawing shows two boxes resting on frictionless ramps. one box is relatively light and sits on a steep ramp. the other box is heavier and rests on a ramp that is less steep. the boxes are released from rest at a and allowed to slide down the ramps. the two boxes have masses of 8 and 38 kg. if a and b are ha = 4.6 and hb = 1.3 m, respectively, above the ground, determine the speed of (a) the lighter box and (b) the heavier box when each reaches b. (c) what is the ratio of the kinetic energy of the heavier box to that of the lighter box at b?

Which of the following represents an upside-down image?

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?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant