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A sample of 50.0 kilogram of water at 20.00oC is mixed with 100.0 kilogram of water at 23.00oC. Evaluate the change in entropy.
An object is accelerated by a force. If the acceleration increases by a factor 2 and the mass increases by a factor 4, by what factor was the force increased
An airplane is flying in a horizontal circle at a speed of 133.3 m/s. Banked for this turn, What is the radius of the circle in which the plane is flying
A textbook of mass 2.09kg rests on a frictionless, horizontal surface. What is the moment of inertia of the pulley about its rotation axis
Mr. Physics drops a rock down a 250-meter deep well. Upon impact with the bottom of the well a short burst of sound is produced with a frequency of 250 Hz. How long after he drops the rock does he hear it hit bottom of the well.
What process or occurrence can create magnetic fields, Explain Coulomb's Law and how it relates to electric current
an artillery shell is fired with a minimal velocity of 420 ms at 53o above the horizontal. to clear an avalanche it
The resistance and the magnitude of the current depend on the path that the current takes. Find the resistance and the current in each case
If the shot is made from a horizontal distance of 5.10m and must be accurate to plus/minus 0.23m (horizontally) what is the range of initial speeds allowed to make a basket
Two capacitors are connected to a battery. The battery voltage is V = 50 V, and the capacitances are C1 = 2.00 ?F, Determine the total energy stored by the two capacitors
A laser beam aimed from the earth is swept across the face of the moon. what is the angle of divergence of the laser beam
Two identical 0.12 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, What is the final vibrational energy of the real system
A 200 g calorimeter contain 500 g of water at 21 degree Celsius. A 100g of ice at -20 degree Celsius is placed into the calorimeter. find the specific heat of the material of the calorimeter
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