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A luminous disk of diameter 2 cm is places 0.8m to the left of a flat screen. A converging lens is places among the disk and the screen at a location 20cm from the disk and a real image is formed on the screen.
1. Discover the focal length of the lens.
2. Discover the size of the image.
A 15 kg block is accelerated at 1.7 m/s2 up a frictionless plane inclined at 5.0° to the horizontal, with the speed increasing from 10 m/s to 35 m/s. What is the average rate at which energy is transferred to the block
Find the magnitude of the magnetic flux through the floor of a house that measures 23m by 18m . Assume that the Earth's magnetic field at the location of the house has a horizontal component of 2.4×10^?5T pointing north, and a downward vertical compo..
Two microscope slides are placed together but held apart at one end by a thin piece of tin foil. Under mercury green light (546 nm) normally incident on the air film formed between the slides, Determine the thickness of the foil
q1. an aluminum pot cal 0.22 calg.k is heated to 320c. then an 80g ice cube at 0c isplaces in the pot it melts and is
One of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 Hz, Determine the fundamental frequency of the air column
assume that the electron is a sphere of radius 10 to the power -17 meters and physically spins about an arbitrary axis.
A proton orbits a long charged wire, making 1.60 x 10^6 revolutions per second. The radius of the orbit is 1.40cm. What is the wire's linear charge density
A ball is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of21.0m/s. Find the horizontal range of the ball
A closed Gaussian cylinder sits centered around the z-axis and above the xy-plane with a length of A and a radius of R, What is the net charge contained in the cylinder
An object experiencing a constant force accelerates at12 m/s. What will the acceleration of this object be if the force is halved
An archer pulls her bow string back 0.380 m by exerting a force that increases uniformly from zero to 219 N. How much work is done in pulling the bow
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
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