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A circular pipe has a diameter of 3 cm and then narrows to 2 cm. When water (density= 1000kg/m^3) flows during at a certain rate, the pressure is 24.0 kPa in the smaller section and 32.0 kPa in the larger section. There is no height change. What is the speed of water in each section?
A supertrain of proper length 200 m travels at a speed of 0.9 times the speed of light (relative to the tunnel) as it passes through a tunnel having proper length 80 m. how much longer is the train than the tunnel
Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable, Find the waves frequency and period
A 49 gram block of copper at -13oC is added to 130 gram of water in a 76 gram aluminum cup. Determine the equilibrium temperature of the cup and its contents
A helium-neon laser (?=633 nm) illuminates a diffraction grating. What is the spacing between slits of the grating
A person with nearsightedness was prescribed with contact lenses of power -2.0 D. What is the range of object distances that this person can see clearly with the wrong lenses
A hollow, thin-walled sphere of mass 13.0kg and diameter 45.0 cm is rotating about an axle through its center. At the time 4.00s, find the angular momentum of the sphere
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70{\rm m/s} relative to the ground. What is the magnitude of the ball's velocity relative to Juan
A 70-kg man and a 55-kg woman holding a 2.50-kg purse on ice skates stand facing each other. What is the woman's recoil speed
A cube of ice is taken from the freezer at -5.7%u2218Cand placed in a 95g aluminum calorimeter filled with 305g of water at room temperature of 20.0 %u2218C, What was the mass of the ice cube
The drawing shows an adiabatically isolated cylinder that is divided initially into two identical parts by an adiabatic partition. Both sides contain one mole of a monatomic ideal gas (γ=5/3) with the initial temperature being 525 K on the left an..
What is the kinetic energy of a carbon atom moving with a speed of 500 m/s.
Two slits are separated by 0.270 millimeter. A beam of 570 nm light strikes the slits, producing an interference pattern. Find the number of maxima observed in the angular range
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