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An ideal fluid, with density of 0.85 x103kg/m3, flows at 7.0 m/s through a level pipe with aradius of 0.50 cm. The pressure in the fluid is 1.4 x105N/m2. This pipe connects to a second level pipe, withradius of 1.5 cm. Find the speed of flow in the second pipe.
A baseball pitcher (m = 81 kg) is initially standing at rest on an extremely slippery, icy surface. What is the recoil velocity of the pitcher
A 4 kg dog stands on one end of a 20 kg boat. The dog is initially 6 m from the shore, How far has the boat moved after the dog has walked the 2m
A cannon tilted up at a 30° angle fires a cannon ball at 80 m/s from atop a 18 m high fortress wall. What is the ball's impact speed on the ground below
While taking a walk around your neighborhood, you see a flash of lightning hit the Earth in the distance. How far away did the lightning strike the ground
In a single-slit experiment, light of wavelength 500 nm is used to produce a diffraction pattern on a screen 4.0 m away. what is the slit width
A 51.0cm -long solenoid 1.35 cm in diameter is to produce a field of 0.335mT at its center. How much current should the solenoid carry
The efficiency of a particular Carnot engine is 0.310, Find the temperature of the low-temperature reservoir
A roller coaster of mass 250kg has a speed of v=12m/s at point a, located at a height h=15m. The car can move without friction actiong between points a and b. How far does the car travel before coming to rest
holding these two strips togeather they will repel each other. assume the average lencth 10cm of the tapes is half
a girl of mass 40 kg is in a rocket ship an altidude of 35 km above the surface of the earth. Find the gravitational force on the girl by the earth
In a hydrogen atom, the electron makes a transition from the n = 7 to the n = 2 state. What is the wavelength of the emitted photon
Two atomic particles approach each other in a head-on collision. Each particle has a mass of 1.77 x 10-25 kg. The speed of each particle is 1.94 x 108 m/s when measured by an observer standing in the laboratory.
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