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An astronaut is rotated in a horizontal centrifuge at a radius of 5.0 m.
(a) What is the astronaut's speed if the centripetal acceleration has a magnitude of 7.09?
(b) How many revolutions per minute are required to produce this acceleration?
(c) What is the period of the motion?
A copper pot with a mass of 0.505kg contains0.175kg of water, and both are at a temperature of21.0?C. Find the final temperature of the system
A guitar string is74cm long and has a mass of 3.6 g. The distance from the bridge to the support post isL= 60 cm, and the string is under a tension of533N. What is the frequency of the second overtone
A 0.400-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. How far does the putty-block system compress the spring
A shot-putter accelerates a 7.28 kg shot from rest to 14.8 m/s. If this motion takes 1.31 s, what average power was developed
A hockey goalie in full gear has a mass of 100.kg. A 0.145 kg puck is shot at him with a veloctiy of 49m/s. Would this be an elastc or inelastic collison? Explain?
At a party, a stereo system comprises of two identical balanced speakers located right next to each other, and they are playing atmaximum volume. A drunken participant trips over one of thespeaker wires and disconnects it leaving the one remaining..
A rod has a linear density ? = 3x, where x is the distance along the rod, What is the coordinate of the center of mass of the rod
The inductance of a closely packed coil of 350 turns is 9.5 mH. Calculate the magnetic flux (per winding) through the coil when the current is 5.0 mA
The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10-9 m2 and a thickness of 1.1 x 10-8 m, how many such ions are present on the outer surface
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension. compute the wave propagation speed on the guitar strings
A 6650kg iceberg with density 931 {\rm kg/m}^3 is afloat in seawater with density 1030 {\rm kg/m}^3. Find the volume of water displaced by the iceberg
A car moves with a constant acceleration of 2.1 m/s2. At a time of 1 s, it is 170 m beyond a mile marker, Find the car's position after the mile marker at time 5 s
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