When the switch is closed in the above circuit, what is the voltage on the resistor R1 and R2 after 2.2 us, assuming 0 volts on the inductor to start? Also, what is the voltage on the inductor at this instance?

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?

Which best describes the difference between internal and thermal energy?