Through which gas in the table will sound waves travel faster than they would travel through ammonia?
Alr (dry)
Ammonla
Methane
Nitrous
oxide
Argon
346
415
450
263
323
Speed of
sound
(m/s)
A. Air
B. Methane
C. Argon
O D. Nitrous oxide

What do you think car designers do if the damage caused by a crash test is too severe?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.