Twenty m3/hr of air at 600 kpa, 330 k enters a well-insulated, horizontal pipe having a diameter of 1.2 cm and exits at 120 kpa. assume steady state and use the ideal gas model for the air. also assume constant specific heat, p1.007 kj/kg-k for air at 330 k. determine the mass flow rate, in kg/s, and the exit velocity, in m/s.

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth