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The temperature inside the refrigerator is 2.0 °C. It stands in a kitchen whose temperature is 22 °C. After a period of an hour, 95 kJ of heat are transferred from the interior of the refrigerator to the kitchen.
As a result of this heat transfer out of the system, what is the entropy change of
(i) the contents of the refrigerator, and
(ii) the kitchen?
Find out the magnitude of the electric field at a point P on the y-axis 0.529 m from the origin. The value of the Coulomb constant is 8.99 × 109 N • m2/C2.
A 200g block is suspended from a vertical spring, causing the spring to strech by 20 cm, What is the speed of the block when it is 5.0cm above the equilibrium position
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 2.15 ?C/m and are 6.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane ..
Two loudspeakers face each other, vibrate in phase and produce identical 416 Hz tones. A listener walks from one speaker toward the other at the constant speed and hears the loudness change.
A small rocket is powered upward on lift-off by an engine thrust of 12,000-N. If the resulting upward acceleration is 6.40m/s^2, what is the mass of the rocket?
What is the height of the power line and the initial speed of the ball?
A helium-neon laser intended for instructional use operates 7.5 mW. Find out the maximum value of the electric field at a point where the cross sectional area of beam is 10 mm.
Assume The resistance per length of the wire is 0.089 Ω/m. When the magnetic field is 0.5 T, find out the magnitude of the current through middle leg PQ of the circuit.
A person stretches a rope of length 55 m between the top of a building to the base of a tree d = 23 m away. How tall is the building.
How many joules of kinetic energy does a 750 automobile traveling at a typical highway speed of 65 have.
A string of 13 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 63 W. What is the comparable resistance of light string.
Assuming that the bond energy holding together a water molecule is typical, use table below to estimate how various molecular bonds might be broken with this energy.
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