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The recovery time of a hot water heater is the time required to heat all the water in the unit to the desired temperature. Suppose that a 52 gal (1.00 gal = 3.79 10-3 m3) unit starts with cold water at 11°C and delivers hot water at 52°C. The unit is electric and utilizes a resistance heater (120 V ac, 3.0 ) to heat the water. Assuming that no heat is lost to the environment, determine the recovery time (in hours) of the unit.
Iterates until convergence is reached (the previous guess for the velocities is not significantly different from the current guess and calculates the friction factor for the current guess of velocities.
You have been given 2.2019195 g of copper from which you are to fashion a wire whose resistance is 1.7423174 ohms. What will the diameter of the wire be that you fashion
A u-tube with a cross-sectional area of 1.00 cm^2 is open to the atmosphere at both ends. WAter is poured into the tube until the water rises part way along the straight sides, What is the density of the oil
An inductor has a 56.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
A 1128 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a radius of 272 m. find the normal force on the truck to the highway surface
Air is confined at atmospheric pressure (101.3 kPa) in a cylinder whose volume is 0.22 m3. Calculate the increase in internal energy of the air
A 0.360 kg pendulum bob passes through the lowest part of its path at a speed of 2.86 m/s, When the pendulum reaches its highest point, what angle does the cable make with the vertical
A 1200 kg ore cart is rolling at 10.8 m/s across a flat surface. A crane dumps 691 kg of ore (vertically) into the cart. How fast does the cart move after being loaded with ore
Two particles collide and stick together to form a new particle.First particle has a rest energy E0 and a kinetic energy 2E0.Second particle is stationary and has a rest energy 2Eo. Find therest energy and the speed of the new particle.
Each of the following objects has a radius of 0.188 m and a mass of 2.71 kg, Find the magnitude of the angular momentum of each object
An oscillating LC circuit has a current amplitude of7.30 mA, a potential amplitude of 250mV, and a capacitance of 205 nF. What is the maximum rate at which the current changes
a picture window has dimensions of 1.40m x 2.50m and is made of glass 5.20mm thick. on a winter day the outside
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