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Problwm:
A 5-turn circular loop of wire of radius 23 cm carries a current of 15 A. Its magnetic moment is oriented at an angle 50o to a uniform magnetic field of 3.7 T. What energy is required to rotate the loop from its lowest energy position to this orientation?
The resistance of a bagel toaster is 14 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
what is the entropy change during the free expansion of 1.70 moles of an ideal gas from an intial volume of 1.60 liters into an evacuated volume of 1.90 additional liters
a block is pushed across a rough horizontal surface by a horizontal force of magnitude P= 25 . The coefficient of kinetic friction between the block and the ground is 0.3 if the blck started from rest
A diffraction grating has 3107 lines/cm. Light that contains all wavelengths between 420 and 656 nm shines on the grating. Calculate the width of the dark
A force F= (6x - 2y)N acts on a particle that undergoes a displacement delta r= (3x + y)m. find the work done by the force on the particle
A 70-? electrical appliance and a 90-? electrical appliance are plugged into the outlets of a house. By what factor will the power used change
a 1280 kg car pulls a 350 kg trailer. the car exerts a horizontal force of 3.6 x 103 n against the ground in order to
An R = 46.1 ? resistor is connected to a C = 43.0 ?F capacitor and to a ?VRMS = 102 V, and f = 108 Hz voltage source. Calculate the power factor when the capacitor is replaced with an L = 0.358 H inductor
Ice (initially at 0oC) is added to 0.75L of tea at 10oC to make the coldest possible iced tea. how much liquid is in the pitcher when this condition occurs
A learner throws a set of keys vertically upward to his friend who is in a window 4.00 meter above. His friend's outstretched hand catches the keys 1.5 second later. Find with what initial velocity were the keys thrown
An object moving with uniform acceleration has a velocity of 10.0 cm/s in the positive x-direction when its x-coordinate is 2.94 cm. If its x-coordinate 3.35 s later is 5.00 cm, what is its acceleration
The sound intensity from a rock band is measured to 120 dB at a distance of 10 meter. Determine what is the sound intensity at a distance of 100 m
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