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Calculate the peak electric field inside a 645 Watt microwave oven under the simplifying approximation that the microwave propogates a plane wave through the oven's 740 cm2 cross-sectional area.
Answer = _____________ kV/m
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
a solenoid that is 91.4 cm long has a cross-sectional area of 15.0 cm2. there are 1000 turns of wire carrying a current
A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..
A proton moves at a speed of 1155 m/s in a direction perpendicular to amagnetic field with a magnitude of 0.74 T. What is the magnitude of the magnetic force on the proton?
An aluminum rod is 21.0 cm long at 20°C and has a mass of 350 g. If 15,000 J of energy is added to the rod by heat, what is the change in length of the rod
An ordinary drinking glass is filled to the brim with water (245.0 mL) at 2.05°C and placed on the sunny pool deck for a swimmer to enjoy. how much water will have spilled over the top of the glass
air that initially occupies 0.49 m3 at a gauge pressure of 63 kpa is expanded isothermally to a pressure of 101.3 kpa
A stick is resting on a concrete step with 1/4 of its length hanging over the edge. what is the magnitude of the angular acceleration of the stick at the instant shown
An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. Find the magnitudes of the net force acting on the electron
Two students on roller skates stand face-to-face, then push each other away. One student has a mass of 99 kg and the second student 68 kg. Find the ratio of the magnitude of the first student's velocity to the magnitude of the second student's veloci..
Ramon has a coherent light source with wavelength 586 nm. What is the minimum width of the screen if Ramon wants to display three interference maxima
What is the strength of an electric field at a distance r from the center, inside the sphere. Assume the sling thrower could gradually increase the speed of the stone.
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