Acircuit consists of a power supply and two resistors r1 and r2 connected in parallel. an ammeter is placed to measure the current through the restive r1. the ammeter reads i1= 7.7ma and the values of the resistors are r1=6.0 k ohm and r2= 1.6 ohm. the power supply was turned off, then the circuit was modified. resistor r1 was replaced with a different resistor rnew= 1.2 ohm. the power supply is turned back on. it provides exactly the same voltage as originally. what is the new current through resistor rnew?

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope.describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

What are similarities and differences between refraction, reflection, diffraction and absorption?