An iron weight, suspended by a string. Is motionless. The tension in the string is 4.75 newtons. What is the mass of the iron weight? A 0.485 kilograms
B. 4.75 kilograms
C. 9.65 kilograms
D. 10.0 kilograms
E. 15.5 kilograms​

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

Which is a substance that can be separated by physical means and is not the same throughout