(Fluid Mechanics) An airplane has a mass of 2.5×106 kg , and the air flows past the lower surface of the wings at 90 m/s .

If the wings have a surface area of 1400 m2 , how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.