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The volume rate of a flow in a horizontal pipe is 4.0 L/s. The diameters of the pipe at points A and B are 4.0 cm and 5.0 cm, respectively. Discover a) the speeds of the flow at points A and B; b) the dissimilarity in pressure between the two points, i.e.
Consider a long, narrow bar magnet that is north on one end and south on the other passing lengthwise, north first, through the center of a circular conducting loop at constant velocity. Sketch qualitatively the emf in the loop as a function of ti..
A 53-kg womancontestant on a reality television show is at rest at the south endof a horizontal 149-kg raft that isfloating in crocodile-infested waters. She and the raft areinitially at rest.
A square with sides of length L=.1 m has a point charge of 2 microC at each of its four corners. Find the magnitude of the force acting on any one of the charge
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, What is the initial kinetic energy of the car
The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of approximately
You want to take a full-length photo of your friend who is 2.00m tall, using a 35.0mm camera having a 50.0mm lens. How far should your friend stand from the lens
A 4.3 kg mass with an initial velocity of v1 =aˆi, where a = 2.94 m/s collides with and sticks to a 3.05 kg mass with an initial velocity of v1 = bˆj, where b = ?4.8 m/s
An 16--long bicycle crank arm, with a pedal at one end, is attached to a 23--diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate from 65 to 95 in 12 . What length of chain passes ov..
A tuning fork with a frequency of 440 Hz is held above a resonance tube that is partially full with water. Assuming that the speed of sound in air is 342 m/s, for what three smallest heights of the air column will resonance occur?
a farsighted person has a near pont that is 67cm from her eyes. she wears eyeglasses that are designed to enable her to read a newspaper held at a distance of 25cm from her eyes. find the focal length of the eyeglasses
A child's water pistol shoots water through a 1.0mm -diameter hole. What is the volume flow rate during the squirt
A 1.78 m long air column is open at both ends. The frequency of a certain harmonic is 828 Hz, and the frequency of the next-higher harmonic is 920 Hz. find out the speed of sound in the air column.
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