In a car left, compressed air exerts a force on a piston with a radius 5.0 cm this pressure is transmitted to a second piston with a radius of 15.0 cm. How large a force must the compressed air exert to lift a 1.33 x 10^4 N car?

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.