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A litre of water is utilized to cool some electronics. If 1,000 Joules of heat is given off by the electronics, by what temperature does the water increase? One litre of water has a mass of 1 kg and a specific heat of 4.184 Joules/(g C°).
Two electrons are confined in an extremely thin wire of length a. You may treat this wire as a one-dimensional infinite potential well. What is the energy of the ground state
The ceiling of an arena is 19.8 meter above the floor. Determine the minimum speed that a thrown ball would have to reach the ceiling
A copper rod has a length of 1.2 m and a cross-sectional area of4.0 x10-4 m2. One end of the rod is incontact with boiling water and the other with a mixture of ice andwater. What is the mass of ice per second that melts? Assume that no heat is lo..
Suppose a mass of a certain spherical neutron star is twice the size of the sun and its radius is 10km. Determine the greatest possible angular speed the star can have so that the matter at its surface on the equator is just held in orbit by the grav..
A star of mass 1.85×1031 kg and diameter 8.20E+9 m rotates with a period of 27.0 days. what is the new diameter of the star
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. What is the minimum uncertainty in the duck's speed
Consider the “clearance” concept for the macroscopic view of chemical removal by kidney. The effective volume in a human body is about 18 liters. The clearance of a person for a specific chemical is K = 2L/hr. (a). Determine the concentration of t..
a rifle with a mass of 2.5 kg fires a bullet with a mass of 0.0045kg. the bullet moves with a muzzle velocity of 350m/s after the rifle is fired
A rubber raft of mass 3M floats past a dock at 1 m/sec toward the east. A girl of mass 2M runs down the dock and jumps in the raft with a speed of 2 m/sec in the north direction. Find the final velocity of the raft and girl
q1. the potential difference between the plates of a capacitor is 70 v. midway between the plates a proton and an
tim and rick both can run at speed vr and walk at speed vw with vrgtvw . they set off together on a journey of
A 81.0-kg daredevil exhibitionist hangs on to the end of a long bungee cord attached to the railing of the Brooklyn Bridge and oscillates vertically, What is the frequency of oscillation
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