A hot tub is filled 450 gallons of water. a. What is the volume of water...
Below is a hexagonal hot tub with sides measuring 3 feet and a water level of three feet. The water is currently 93 degrees F. Using the information in the table, how long will it take to heat the water to 103 degrees F? 14. Below is a hexagonal hot tub with sides measuring 3 feet and a water level of three feet. The water is currently 93 degrees F. Using the information in the table, how long will it...
(+30) You have a half-filled hot tub that is cold (T-25 "C). You have two ways of heating it up: add more hot water (maximum T = 45 "C) and/or turn on the electric heater (5 kW). The total water capacity of your well-insulated hot tub is 1.0 m3, and the desired water temperature is 38"c. a. If you just use the electric heating element to heat up the existing water, without adding any new hot water: i. (+8) How...
- Reauct 2 CHE 1341 Dr. Samoylenko Homework #3 • YOUR NAME Problem 7 A hot tub is filled with 450 gal of water. a) How many kilocalories are needed to heat the water from 23 °C to 53 °C? Specific heat capacity of water is 1.00 cal/g.°C or 4.184 J/g.°C. Hint: density of water, dh20 = 1.0 g/mL volume of water=450 gal b) Convert the amount of energy from part a) to kJ Problem 8 A 42 0.eamnla nf...
Problems 1. The following equation describes the process of warming a hot tub by adding hot water: IN-ISTART) where is the temperature of the water in the hot tub is the temperature of the water flowing into the hot tub, (130°F) is the initial temperature of the water in the hot tub (65°F) is the hot-water flow rate (5 gpm) is the volume of the hot tub (500 gallons), and is the elapsed time since the hot water started flowing...
Applied UMB RS LDC) 1. A cylindrical hot tub is being filled by a hose that pours out water at a constant rate of 0.25m/min at 8:00 a.m. The volume of water in the pool was 8m and the radius of the hot tub is 2m. a) Determine the average rate of change with respect to its height between 9:00 a.m. and 10:00 a.m. b) Find the instantaneous rate of change at 10:00 a.m.
When boiling water, a hot plate takes an average of 8 minutes [min] and 39 seconds [s] to boil 130 milliliters of water [mL]. Assume the temperature in the lab is 69 degrees Fahrenheit [degrees°F]. The hot plate is rated to provide 370 watts [W]. How efficient is the hot plate?
A bottle with a volume of 196 U. S. fluid gallons is filled at the rate of 1.8 g/min. (Water has a density of 1000 kg/m3, and 1 U.S. fluid gallon = 231 in.3.) How long does the filling take in years ?
A bottle with a volume of 186 U. S. fluid gallons is filled at the rate of 1.5 g/min. (Water has a density of 1000 kg/m3, and 1 U.S. fluid gallon = 231 in.3.) How long does the filling take? IN YEARS
(a) What is the cost (in exist) of heating a hot tub containing: 470 kg of water from 10.0 degree C to 40 degree C, assuming 75.0% efficiency to acceptance for heat transfer to the surroundings? The cost if efficiency is 9.00 cents/(kW-h). (b) What current (in A) mass used by the 220 V AC electric heater if this h?
Problems 1. To what temperature will 4500 J of work raise 1.0 kg of water initially at 10 degrees Celsius? 2. How much work (in joules) must a person do to offset eating a 700 Cal piece of cake? 3. A water heater can generate 8300 kcal/hr. How much water can it heat from 12 degrees Celsius to 67 degrees Celsius in 1 hour? 4. An automobile cooling system holds 60 liters of water. How much heat (in kilocalories) does...