During the lunar mission of Apollo 11, Armstrong and Aldrin descended to the moon’s surface in the lunar module while Collins remained in orbit in the command module. If the command module’s period was 2 hours and 20 minutes, how high above the moon’s surface did it orbit? (mmoon = 7.35 x 1022 kg, Rmoon = 1.74 x 106 m, and G = 6.67 x 10-11 N m2/kg2)

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

Aforce of 8,480 n is applied to a chart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?