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The near point of a naked eye is 30 cm. When an object is placed at the near point and viewed by the naked eye, it has an angular size of 0.053 rad. A magnifying glass has a focal length of 20 cm, and is held next to the eye. The enlarged image that is seen is located 63 cm from the magnifying glass. Determine the angular size of the image.
A 54.2 g block of copper whose temperature is 400 K is placed in an insulating box with a 120 g block of lead whose temperature is 200 K. What is the change in the entropy of the system
Use the principle of superposition and the boundary conditions for a stretched string with a fixed or free end to explain the form of reflected pulses. Explain and use the mathematical expression for a standing wave
A truck of mass 7,000 kg is traveling along a level road at an initial speed of 20 m/s. Find the total work done on the truck
Two masses, M1=20.00 kg and M2=12.00 kg, are 50.00 m apart. Find the location of center of mass of the two masses
A thin, horizontal copper rod is 1.20 m long, What is the minimum current in the rod that can cause it to float in a horizontal magnetic field of 2.45 T
In a single slit diffraction experiment, a beam of monochromatic light of wavelength 640 nm is incident on a slit of width 0.400 mm. what are the positions of the first dark fringes
A rocket is accelerating upward at 4.90m/s2 from the launchpad on the earth. If the ball is displaced 8.50 ? from the vertical and released, find the amplitude of the resulting swings of this pendulum
A converging lens with a diameter of 30.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite
For the definitions please include the equations to: Give a definition of the moment of inertia and Give a definition of the torque as a vector. Briefly describe torque
Two loudspeakers are mounted on a merry-go-round whose radius is 9.01 m. When stationary, What is the beat frequency that is detected by the listener when the merry-go-round is near the position shown
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, What is the value of the current density
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