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On its high power setting, a microwave oven produces 910 W of 2535 MHz microwaves.
(a) How many photons per second is this?
(b) How many photons are required to increase the temperature of a 0.500 kg mass of Pasta Urone by 45oC, assuming a specific heat of 0.900 kcal/kg.oC? Neglect all other heat transfer.
(c) How long must Urone wait for his pasta to be ready?
An object is moving along a straight line and the uncertainty in its position is 0.7 m. Discover the minimum uncertainty in the momentum of the object.
A projectile is thrown from a point 39.2m away from the foot of a building 19.6m high and just reaches the top horizontally. Find the velocity of projection and the angle of throw
A projectile is fired at 30° above the horizontal. Any effects due to air resistance are negligible. What is the horizontal component of the initial velocity
An object with height of 5 cm is placed 30 cm away from a diverging lens with focal length f = - 20 cm. Find the location and height of the image. What it the lateral magnication? Is the image upright or inverted? Real or virtual? Use a ruler to draw..
An object is 0.9 m away from a particular lens. The lens produces an image of that object 30 cm on the other side of the lens. Is this lens converging or diverging? Find the focal length of this lens.
a force of 5.0rm n is required to stretch a certain spring by 1.5rm cm .a. how far must this spring be stretched for
Compute the gravitational potential due to a thin rod of length L and mass M at a distance R from the center of the rod and in a direction perpendicular to the rod. Secondly, consider a point mass located at a distance D from the nearest end of a thi..
A source emits sound uniformly in all directions. There are no reflections of the sound. find the total sound power P emitted by the source
As a coffee enthusiast you wish to keep your coffee as hot as possible for as long as possible. You wish to find the rate of heat loss of a typical coffee mug. Assume the mug to be a cylinder which has a lid made out of the same material as the re..
A 14 g ball of clay travelling east at 3.0 m/s collides with a 30 g ball of clay travelling north at 2.00m/s. What are the speed and the direction of resulting 44 g ball of clay.
What is the energy now stored if the capacitor was disconnected from the potential source before the separation of the plates was changed
A compressor operates at steady state with refrigerant R134a as the working fluid. The refrigerant enters at 2.4 bar, 0oC with a volumetric flow of 0.38 m3/min. determine the power input
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