SOMEONE HELP Jeffery used a stream table as a model to show how water erodes soil. As he sprayed water on the stream table, some of the soil was carried to the end of the table. Jeffery used his stream table to model an interaction between which two spheres?
A. geosphere and biosphere
B. biosphere and atmosphere
C. hydrosphere and atmosphere
D. geosphere and hydrosphere

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

Which of the following is an example of units for speed

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)