R = 30mega An electric circuit is composed of battery with internal resistance of resistor with resistance R = 1500mega voltmeter with resistance of What is
current inside the circuit the voltmeter indicates the voltage of 40 What
current does flow inside voltmeter and what is electromotive force of the
battery

If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f

When an object is heated it contracts. a. true b. false

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.