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Question: Cooling water for a heat exchanger is pumped from a lake through an insulated 3-in. diameter Schedule 40 pipe. The lake temperature is 50°F and the vertical distance from the lake to the exchanger is 200 ft. The rate of pumping is 150 gaymin. The electric power input to the pump is 10 hp.
a. Draw the flow system showing the control surfaces and control volume with reference to a zero energy reference plane.
b. Find the temperature at the heat exchanger inlet where the pressure is 1 psig.
A uniform electric field of magnitude 300 V/m is directed in the positive x direction. A +10.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm). What was the change in the potential energy of this charge?
A radio antenna broadcasts a 1.0 MHz radio wave with 29kW of power. What is the wave's intensity 33km from the antenna
You are a blacksmith and have been working with 18.3 kg of steel. WHen you are finished shaping it, How much of this water is converted to stem
Three 4 uF capacitors are connected in parallel across the terminals of a 120 Hz generator. What is the capacitive reactance of the circuit
A 120 V potential difference is applied to a space heater whoseresistance is 12 Ω when hot. (a) At what rateis electrical energy transferred to thermal energy?(b) What is the cost in cents for 6.0 h at US5.0¢/kW·h?
What is the little distance between the speakers for which the interference of the sound waves is destructive.
A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.46 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.2° with the horizontal. The coefficient of kinetic friction is 0.400, and the crat..
For a charged hollow metal sphere with total charge Q and radius R centered on the origin: Select "True" or "False" for each statement. 1. The field for r >> R will be the same as the field of a point charge, Q, at the origin 2. The field in the ho..
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
a guitar string has a tension t length l and diameter d. give the multiplicative factor by which the fundamental
A 54.9 kg ice skater is moving at 4.02 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.791 m around the pole. Determine the force exerted with the horizontal rope on her ..
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