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Does the Second Law limit the efficiency of a furnace that burns natural gas? Why or why not?
a certain lightbulb has a tungsten filament with a resistance of 22.5 omega when cold and 141 omega when hot. assume
When stationary the speakers both play a tone whose frequency is 100 Hz. They are situated at opposite ends of a diameter. The speed of sound is 343 m/s and the merry go round revolves once every 20s. What is the beat frequency that is detected by..
What is the spring constant assuming he rises back to his original height?
A 480 kg car moving at 14.4 m/s hits from behindanother car moving at 13.3 m/s in the same direction. If the second car has a mass of 570 kg and a newspeed of 17.9 m/s, what is the velocity of the first car after the collision?
A proton is moving parallel to a uniform electric field. What is the magnitude of the electric field
You are standing between two plane mirrors that are parallel to each other. Determine the first two mirror positions on each side of you relative to the mirrors
What is the maximum weight that a balloon full with 1.00 m3 of helium can lift in air? Suppose that the density of air is 1.20 kg/m3 and that of helium is 0.177 kg/m3. Neglect the mass of the balloon.
the electric potential at a position located a distance of 18.9 mm from a positive point charge of 8.70times10-9c and
q1. a 0.50-kg object is attached to an ideal massless spring of spring constant 20 nm along a horizontal frictionless
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air, that the patient and platform start from rest, determine the recoil velocity
What is the change in the internal energy of the gas? Express your result in scientific notation and to three significant digits.
Ship A is in the lead, approaching the Earth at v1 = 0.78c and separating from ship B with a relative speed of 0.44c. As seen from Earth, what is the speed, v, of ship B
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