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If a stream function and a velocity potential exist, sketch both the streamlines the equipotential lines and the pressure field using the pressure at the origin to normalize.
The exhaust mass flow rate is constant at 21 lb m/s. Determine the value of the restraining force Fx. Assume the exhaust flow is essentially horizontal.
Suppose another stone is thrown horizontally from the same building. If it strikes the ground 67 m away.
Suppose a ski-jumper lands at a point 157 m down the incline of the track described in the example (with a horizontal take-off). What was her speed at take-off?
Determine an equation for the time at which the projectile strikes the building. (Use any variable or symbol stated above as necessary.)
A particle initially located at the origin has an acceleration of = 2.6 m/s2 and an initial velocity of i = 5.3 m/s. Find the velocity of the particle at t = 6.0 s.
A projectile is launched straight upward at +73.5 m/s from a height of 93.0 m, at the edge of a sheer cliff. Find the maximum height of the projectile above the point of launch.
A motorist travels at a constant speed of 34.0 m/s through a school zone, exceeding the posted speed limit. Find the distance required for the policeman to overtake the motorist.
You are traveling along an interstate highway at 32.0 m/s (about 72 mph) when a truck stops suddenly in front of you. What was your acceleration, assuming it was constant?
If the weights of the three children at points A, B, and C are 375 N, 260 N, and 400 N, respectively, determine the magnitude and the point of application of the resultant of the three weights.
A river has a steady speed of 0.461 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point. How much time is required in still water for the same length swim?
If the speedboat travels 58.4 km/h, in what direction should it head? Express the direction as a compass bearing with respect to due north.
A police car traveling at 101.7 km/h is traveling west, chasing a motorist traveling at 77.0 km/h. What is the velocity of the motorist relative to the police car?
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.20 m/s at an angle of 21.0° below the horizontal. Find the height from which the ball was th
Determine the mass of water supplied to the sprays to provide 10 m3/h of conditioned air. What is the heater power required?
Find the temperature to which the air is cooled and the thermal loading on both the cooler and heater. Assume that a fan before the cooler absorbs 0.5 kW.
Cooling water enters a cooling tower at a rate of 1000 kg/h and 70 degree C. Calculate the flow rate of the dry air in kg/h and the make-up water required per hour.
What percentage of the water flow rate must be supplied as make-up water to replace the water evaporated into the air stream?
Estimate the moisture picked up by 1 kg of dry air, and the total enthalpy change between the entering and leaving streams expressed per unit mass of dry air. Ans. 0.0864 kJ/kg air, 220 kJ/kg air.
An air-water vapor mixture at 0.1 Mpa, 30°C, 80% RH has a volume of 50 m3. Calculate the specific humidity, dew point, wet bulb temperature, mass of dry air and mass of water vapor.
During the process there is a heat transfer of 60 kJ from the ideal gas to the surroundings. Determine the volume and pressure at the end of the process.
Determined the amount of heat transferred to the air, in kJ, while increasing the temperature to 1200 K. Assume air has the constant specific heats evaluated at 300 K.
Which is rotating about its axis CD at an angular velocity of w1=200 rev/s, with respect to ground. Find the angular acceleration of the disk with respect to ground.
Determine the velocity and acceleration of point A, which is the outermost tip of one of the blades (with respect to ground) when the angle is 0,90,and 180 degrees from the tail.
Determine (a) the mass flow rate through the nozzle, (b) the exit temperature exit temperature of the air, and (c) the exit area of the nozzle.