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A microwave oven is powered with an electron tube called a magnetron, which generates electromagnetic waves of frequency2.75 GHz. The microwaves enter the oven and are reflected with the walls. The standing wave pattern produced in the oven can cook food unequally, with hot spots in the food at antinodes and cool spots at nodes, so a turntable is often utilized to rotate the food and distribute the energy. If a microwave oven intended for utilize with a turntable is instead used with a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as carrot strips or cheese. The separation distance among the burns is measured to be 5cm ± 5%. From these data, Compute the speed of the microwaves.
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +44.0 cm. How far behind the concave lens should the film be placed
A space station consists of two donut-shaped living chambers, A and B, that have the radii 3.20 x10 ^2 m and 1.10 X10^3 m respectively. As the station rotates, an astronaut in chamber A is moved 1.51 x 102 m along a circular arc. How far along a circ..
A neutron at rest decays into a proton and a electron. How much Kinetic energy (in MeV) is shared by the electron and the proton?
A 60 g ball is tied to the end of a 50 cm --long string and swung in a vertical circle. how far to the right does the ball hit the ground
A jewel smith wishing to buff a finished piece of jewelry attaches a buffing disk to his drill. Determine the tangential speed of the rim of the disk
An unknown length of platinum wire 0.730mm in diameter is placed as the unknown resistance in a Wheatstone bridge. How long (in meters) is the platinum wire
If you see the displayed waveform on an oscilloscope screen,given that voltage scale is 50 millivolt/division, and the timescale is 100 milliseconds/div What is the peak-to-peak amplitude for the waveform ?
Mars rotates about its axis once every 88 642 s. What is the rotational period of Mars according to the beings on the spaceship
You are trying to shoot supplies from the ground so that they reach the top of a plane while flying low. The plane is flying at an altitude of y=20 meters high and with a speed of 30m/s, and you want to project your medical supplies with an initia..
A creamy salad dressing is made up of heavy cream, corn oil, If the cream layer is 2.20×10?2 m tall, the oil layer 2.80×10?2 m tall, and the vinegar layer 8.000e-3 m tall, what is the gauge pressure at the bottom of the jar
A transverse wave is travelling in a denser medium is incident on a rarer medium. How the phase of the wave is affected
a retarding force is applied to a body moving in a straight line so that during an interval of its motion its speed v
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