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A container of water begins with a heat capacity of 500J/K (constant) and a temperature of 70?C. It cools in a room at 10?C until it too reaches that temperature; the temperature of the room does not change.
(a) What is the change in the entropy of the room during the cooling?
(b) What is the change in the entropy of the water?
(c) What is the net change in the entropy of the Universe? Does it obey the Second Law?
A 67? resistor, an 9.0?F capacitor, and a 36mHinductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
Suppose two highly precise, identical clocks are synchronized and one clock is placed on the North Pole, how much will the clocks differ in time
A certain string just breaks while it is under 25 N of tension. A boy uses this string to whirl a 0.75-kg stone in a horizontal circle of radius 2.00 m. The boy continuously increases the speed of the stone. At about what speed will the string bre..
Given: A 23.0\mu F capacitor is charged by a 135.0-V power supply, then disconnected from the power and connected in series with a 0.270-mH inductor.
Larger animals use proportionately less energy than smalleranimals; that is, What resting power does this correspond to
The electric field at a distance of 0.148m from the surface of a solid insulating sphere with radius 0.367m is 1690N/C, Calculate the electric field inside the sphere at a distance of 0.217m from the center
Suppose a 0.3 kg mass on a spring tha has been compressed 0.10m has elastic potential energy of 1 J. What is the spring constant? Also, how much further must the spring be compressed to triple the elastic potential energy
An electron of mass, m, collides with an atom of mass M. The atom is initially at rest, What is the minimum speed of the electron in order to excite the atom
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, Calculate the probable percent error in the length
A beam of electrons passes by a single slit and a beam of protons passes by a second, but identical slit. If the electrons and protons have the similar speed, that beam would experience the greatest amount of diffraction? Clarify your answer.
Loretta travels by car from one city to another with different constant speeds between pairs of cities. Find the distance between two cities
An 80 driver gets into an empty taptap to start the day's work. The springs compress 1.8×10-2. What is the effective spring constant of spring system in the taptap.
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