3. An object with a temperature of 88°C is placed into the water of 25°C. After 15 minutes, the temperature of the ball becomes 65°C. Determine the temperature of the ball after another 15 minutes.
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- If the viscosity of water at 68 deg F is 0.1008 poise, compute its absolute viscosity (μ)in pound-seconds per square foot. If the specific gravity is 1.02, compute its kinematicviscosity (v) in square feet per secondWater entering through 5 ft long and 1 inch diameter pipe has a flow rate of 100 kg/min at a temperature of 100 °C and pressure of 1.95 bar at exit. The density of water at these conditions is 961.5 kg/m3. Calculate the rate of work done at the exit of pipe.A 10m dia. Cylindrical tank has a height of 5m and is full of water at 20ºC (unit weight of water=9.789kN/m3). If the water is heated to a temperature of 50ºC (unit weight of water=9.689kN/m3 ). a. Compute the weight of water. b. What is the final volume when heated to a temp. Of 50ºC? c. Determine the volume of water that will spill over the edge of the tank.
- Q4) A tank 200 liters of fresh water . BRINE containing 2kg/liter of salt enters the tank at the rate of 4 liters per min.and the mixtures kept uniform by stirring, runs out at 3 liters per min. Find the amount of salt in the tank after 30 minutes.Calculate the density of air at standard conditions (T - 25 °C and P a 1 atm).To measure a baseline a steel tape 30m long standardized at 15° with a pull of 80N was used. Find the correction per tape length if the temperature at the time of measurement is 25° and pull exerted is 150N. E= 2×10^5 N/mm²Coefficient of thermal expansion= 11.2×10^-6
- Problem 2. The standard atmospheric pressure is 101.325 kPa. Calculate the height of a mercury column equivalent to this pressure. a. 770.0 mm b. 760.0 mm c. 750.0 mm d. 740.0 mm e. 730.0 mm f. 720.0 mmA fire hydrant is supplied through a 6 inch cast iron pipe of 16,000 feet length. The total drop in pressure is limited to 35 psi. What is the discharge through the pipe for a water temperature of 80 degrees farenheit? Apply Darcy-Wiesbach equation [h_f= (f*L/d)(v^2/2*g)].If the viscosity of water at 68° F is 0.01008 poise, compute its absolute viscosity in pound-seconds per square foot. If the specific gravity at 68° F is 0.998, compute its kinematic viscosity in square feet per second.
- A closed cylindrical tank contains 2 m of water, 3 m of oil (s=0.82) and the air above oil has a pressure of 30 kPa. If an open mercury manometer at the bottom of the tank has 1 m of water, determine the deflection of mercury.Imagine a parcel of air that has a temperature of 40°C at the surface and a dew-point temperature of 20°C at the lifting condensation level. Assume that the environmental lapse rate is 8°C per 1000 meters, the dry adiabatic lapse rate is 10°C per 1000 meters, and the wet adiabatic lapse rate is 6°C/1000 meters. In Table C , record the environmental temperature, the parcel temperature, and the temperature difference (parcel temperature minus the environmental temperature), and then determine whether the atmosphere is stable or unstable at each height. a. What is the height of the lifting condensation level? b. Does this example describe absolute stability, absolute instability, or conditional instability? c. Would you forecast thunderstorms under these conditions?Estimate the vapor pressure, air pressure, relative humidity, and air density at a height of 1500 m into the atmosphere. The total pressure is 100 kPa, air temperature is 28°C and the dew point temperature is 16°C near the ground, the lapse rate 6°C/km, which is constant for both air temperature and dew point temperature. The gas constant R is 287 J/kg-K and constant with respect to altitude. Air Density at 1500m, in kg/m3 Round to three (3) decimal places