Athermistor is a device whose resistance varies with temperature. at 20∘c a thermistor's resistance is 10.0 kω. when connected to a 1.2 v battery, the current through the thermistor increases by 80 μa as the temperature increases to 30∘c. what is the thermistor's resistance

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

Coal contains energy. a. light b. kinetic c. chemical d. mechanical