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a steel oil pipeline spans a river gorge 100 m wide. the inside wall is electrically heated to reduce the viscosity of the oil to ease pumping. an average value for the din in the gorge in 10 m/s. assuming that the average convection heat transfer coefficient is three times that for no wind, determine the heat lost per day for the pipe in calories. outside temo is 0, inside wall temp is 100.
A 16 cm x 16 cm square loop of wire lies in the xy-plane with its bottom edge on x-axis. The resistance of the loop is 0.490 ohms. A magnetic field parallel to the z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds...
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
What was the spring constant of the Super Bungee? How much time after the Super Bungee was attached did it take the bus to stop.
Two capacitors with C1 = 600 pF and C2 = 780 pF are connected in parallel. What is the reactance of the equivalent capacitance at33 kHz
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
A person eats a dessert that contains 280 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J.
A train is travelling up a 4.40 incline at a speed of 3.30 when the last car breaks free and begins to coast without friction. How long does it take for the car to come to rest? How far does the car travel.
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
Consider a straight wire with a radius A, carrying a current I, Use Ampere's law to calculate the magnetic field around the wire as a function of r, the distance from the center
Find out the magnitude of the impulse imparted to golf ball?
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