What size square footing (dimension in constructible feet and inches) would be required if P = 420 k with qallowable= 2850 lb/ft?
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- Calculate final temperature of 85 g of water heated with 1,832 J. The heat capacity of water is 4190 J/kg / C ◦ The initial temperature of water is 0 C ◦ Calculate to one decimal.Calculate final temperature of 44 g of water heated with 2,766 J. The heat capacity of water is 4190 J/kg / C ◦ The initial temperature of water is 0 C ◦ Calculate to one decimal.A ballloon is heated from 15 C to 65 C. The initial volume of the balloon was 1.5L. Assuming a constant pressure, what is the final volume of the balloon?
- An air bubble rises from the bottom of a well where the temperature is 25 0 C, to the surface where thetemperature is 27 0 C. Find the percent increase in the volume of the bubble if the depth of the well is5m. Atmospheric pressure is 101.528 kPaa.Thickness of ice on a lake is 5cm and the temperature of air -20 degree C. If the rate of cooling of water inside the lake be 20,000cal/min through each square metre surface, find k for ice.In a related practical activity, 2 liters of a gas were heated from 35 ° C to 75 ° C. If the pressure was kept constant, calculate the final volume of the gas.
- A 0.44 m3 well-insulated tank contains nitrogen at 100 kPa and 30 deg C. Heat is added until the pressure is 150 kPa. What is the heat transfer (kJ)? Report your answer to 2 decimal places.The reservoir in Figure contains water and immiscible oil at a temperature of 20 ° C. What is the height h in centimeters if the density of the oil is 898 kg / m3?1.21 A team is designing a helium-filled balloon that will fly to an altitude of 80,000 ft. As the balloon ascends, the upward force (buoyant force) will need to exceed the total weight. Thus, weight is critical. Estimate the weight (in newtons) of the helium inside the balloon. The balloon is inflated at a site where the atmospheric pressure is 0.89 bar and the temperature is 22°C. When inflated prior to launch, the balloon is spherical (radius 1.3 m) and the inflation pressure equals the local atmospheric pressure.
- Compute Tc for the mercury isotopes 201Hg and 204Hg.Thermal energy is added to 180 g of water at a constant rate for3.5 min, resulting in an increase in temperature of 12 C°. What isthe heating rate, in joules per second?(1) The specific gravity of a urine sample is found to be 1.110 at a temperature of 24C. The specific gravity of this urine was determined with a urinometer. What is the corrected specific gravity value of this sample? (2) We've learned that urinometers are usually calibrated at 15 C and that we have to correct for samples that are above or below this temperature. This is because the density of a liquid changes with temperature. Using the density formula, explain why temperature affects the density of a liquid. Explain what happens to the density of a liquid as the temperature is raised and lowered.