Many years ago, there was a famous case of a boy born with severe combined immune deficiency (SCID). His physicians placed him in a pathogen-free chamber that resembled a giant glass bubble. What purpose was served by doing this? What treatments are available today that might have helped this boy?

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.

If the pressure in a gas is doubled while its volume is held constant. true or false