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An advertisement claims that a centrifuge takes up only 0.127 of bench space but can produce a radial acceleration of 4900 at 8160 . Calculate the required radius of the centrifuge.
A car drives horizontally off a 86m -high cliff at a speed of 29m/s . Ignore air resistance. How long will it take the car to hit the ground
A solid sphere is released from rest on an incline. When it reaches the bottom, what fraction of its total kinetic energy is rotational
A vertical wall (7.2 m 2.8 m) in a house faces due east. A uniform electric field has a magnitude of 150 N/C. What is the electric flux through the wall
A lid is put on a box that is 14 cm long, 13 cm wide, and 8.0 cm tall and the box is then evacuated until its inner pressure is 7.3 104 Pa. How much force is required to lift the lid at sea level
Two boats start together and race across a 56-km-wide lake and back. Boat A goes across at 52 km/h and returns at 56 km/h. Boat B goes across at 36 km/h, and its crew, realizing how far behind it is getting, returns at 79 km/h. Turnaround times are n..
A 17.0-g piece of Styrofoam carries a net charge of -0.75 µC and is suspended in equilibrium above the center of a large, compute the charge per unit area on the plastic sheet
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
Consider a gas of photons in a cavity with a single photon mode at finite temperature τ. Show that the entropy of the gas can be expressed in terms of the average photon number as
The man hears the sound of the splash 2.8 s after he releases the rock from rest. The speed of sound in air (at the ambient temperature) is 336 m/s. How far below the top of the well is the surface of the water
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.013 m. Water enters the hydrant through an underground pipe of radius 0.094 m. In this pipe the water has a speed of 3.2 m/s.
Compute the density of entropically raised element of air
Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). Estimate the average bulk modulus of Earth's crust given
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