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It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?
an electron is traveling straight along the x-axis in the positive x-direction. as time passes the electron slows down
a ray of one color for which n 1.53 and a ray of another color for which n 1.58 travel through a piece of glass. they
A certain atom of has 89 protons. Assume that the nucleus is a sphere with radius 7.25 fm and with the charge of the protons uniformly spread through the sphere. At the nucleus surface what is the magnitude of the electric field produced by the pr..
The index of refraction of benzene is 1.8. What is the critical angle for a light ray traveling in benzene toward a flat layer of air above the benzene
calculate the de broglie wavelength of the followinga a 1.00g bullet with a velocity of 300 msb an h2 molecule with a
A large metal ring has a radius of 0.30 m and a mass (uniformly distributed) of 2.5 kg. The ring hangs from a nail as shown. What is the rotational inertia of this object
Water flowing through a 2.2 cm -diameter pipe can fill a 400 L bathtub in 6.0 min. What is the speed of the water in the pipe
A car traveling 56 km/h is 23.0 m from a barrier when the driver slams on the brakes. What was the car's constant deceleration before impact
A blacksmith cools a 1.30- chunk of iron, initially at a temperature of 650.0, by trickling 15.6 water over it. How much water did the blacksmith trickle over the iron
a crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.54 ms. the pulling force is 92 n
Two sheets of polarizing material are placed with their transmission axes at right angle to one another. What is the intensity of the transmitted light when the middle sheet is removed
A bird stands on a dc electric transmission line carrying 3300A (Figure 1) . The line has 2.7×10?5? resistance per meter, and the bird's feet are 3.5cm apart
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