Find the temperature at which air posses a density equal to that of hydrogen at 0°C. Density of air at nTP is 14.4. Ans: 3658.2 °C.

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)