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A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 58.7 cm (0.587 m) and the flow speed of the petroleum is 12.7 m/s. At the refinery the petroleum flows at 6.27 m/s. What is the volume flow rate of the petroleum along the pipe and what is the pipe\'s diameter at the refinery?
a 150 g copper bowl contains 220 g of water both at 20.0 degrees celsius. a very hot 300 g of copper cylinder is
Two radio antennas operating at 6.00 Mhz are separated by 120.0m along a North-South line. Find the directions on the compass in which no radiation is sent out
A 144-g baseball mobing 28.0 m/s strikes a stationary 5.25 kg brick resting on small rollers so it moves without significant friction. What is the baseball's speed after the collision
a catapult launches a rock towards a hill 500m away. the rock lands on the hill 20m above the release point of the rock. find the max height of the rock during flight
A fixed 0.15 kg solid-disk pulley with a radius of 0.060 m is acted on by a net torque of 5.4 m�·N. What is the angular acceleration of the pulley
Xenon ions with a mass of 2.20×10?25 kg and charge +e are accelerated between the plates of an ion drive rocket engine to an exhaust velocity of 43,200 m/s. What is the potential difference between the plates
An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.40 10-11 m. What is EPEfina..
the electric field from a radio station some distance from the transmitter is given by 10-4nc cos 106t wheretis in
the flight time refers to the total amount of time the ball is in the air from just after it is launched until just
An instructor wants to use a lens to project a real image of a light bulb onto a screen 2.27 m from the bulb. what focal length lens will be needed
Three springs each hang from a ceiling with a stationary block attached to the lower end. The blocks (with m1> m2 > m3) stretch the springs by equal distances. Each block-spring system is then set into vertical SHM. Rank the masses according to the p..
A Carnot engine works between temperatutes T1 = 495K and T2 = 302K. What is the Carnot coefficient of performance, KC, of the refrigerator
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