Agas initially at 2.8 bar and 60°c is compressed to a final pressure of 14 bar in an isothermal internally reversible process. determine the work and heat transfer, each in kj per kg of gas, if the gas is (a) refrigerant 134a, (b) air as an ideal gas. sketch the process on p–v and t–s coordinates.

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents