Fig. 1.1 shows a car travelling at 30 mis on a level road. At this speed the car has to overcome a total force of 600N opposing the car
Fig. 1.1
(a)
Calculate the distance travelled by the car in 10 s

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.