An ideal gas is maintained at a constant pressure of 7.0 x 104 N/m^2 during an isobaric process while its volume decreases by 0.20 m^3. What work is done by the system on its environment?
A 1.4x10^4j
b 3.5x 10^5 j
C -1.4x10^4j
d -3.5x 10^5j

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.

Mechanical energy is when there are no forces causing an object to lose energy. a. increased b. conserved c. decreased d. doubled i need this answer ! .

What are the effects of pressure on liquids?