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Question:
A 500-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly dropped into an insulating Styrofoam beaker containing 1.00 kg of water at room temperature (20.0 C).
After waiting and gently stirring for 5.00 minutes, you observe that the water''s temperature has reach a constant value of 22.0C. A)
Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal?
In the Bohr model of the hydrogen atom, an electron (mass m=9.1×10^?31kg) orbits a proton at a distance of 5.3×10^?11m. How many revolutions per second does the electron make
A rocket moves upward, starting from rest with an acceleration of 32.0 m/s2 for 4.32 s. How high does it rise above the ground
A spherical mirror is to be used to form an image, four times as tall as an object, on a screen positioned 4.6 m from the mirror. Describe the type of mirror required
Illustrate what is the maximum mass, m1, that can be hung from the chords before the 5.0kg mass just begins to move?
A block of wood weighing 2N slides down a 37^0 inclined plane starting from rest and reaching 2 m/s. What is the kinetic coefficient of friction between the block and slide
In a decay process the ß has a kinetic energy of 0.65MeV, and the neutrino energy is 0.15MeV. find the disintegration energy
A jet pilot takes his aircraft in a vertical loop (a) If the jet is moving at a speed of 1200 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed..
The tension in a ligament in the human knee is approximately proportional to the extension of the ligament, if the extension is not too large. A particular ligament has an effective spring constant of 163 N/mm as it is stretched.
The spring inside a pogo stick is normally uncompressed and has a maximum of 450mm of travel before bottoming out. What is the minimum spring constant so that the spring does not exceed its maximum travel when a 90kg man jumps off a 2.5m high roo..
Sketch clear graph of the cat's position as function of time, assuming that the cat started at the origin.
Write Ehrenfest's theorem for the mean values of the position X and the momentum P of the particle. Integrate these equations; compare with the classical motion. Show that the root-mean-square deviation ΔP does not vary over time. Write the Schroding..
A block of mass M is attached to a spring ofspring constant k and is moving with constant speed in a horizontalcircle on a frictionless table. You measure that the time it takesthe mass to make one complete circle is T seconds. One end of thesprin..
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