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An object is placed 10 m before a convex lens with focal length 5.3 m . Another convex lens is placed 6.84 m behind the first lens with a focal length 6.2 m.
A) At what distance is the second image from the second lens?
B) What is the magnification of the final image, when compared to the initial object?
A 50000-kg railroad freight car collides with a stationary caboose car. They couple together, and 31 percent of the initial kinetic energy is dissipated as heat, sound, vibrations, etc. What is the mass of the caboose?
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.510 s. What force would the blood vessel exert if the arm were not swinging
a wire is 1.2 m long and has a mass of 0.027 kg. the wire is stretched between two points and when driven by an
a spinning disc rotating at 130 rev/min slows and stops 31 s later. how many revolutions did the disc make during this time
Consider a generator with a 350 turn coil on its armature and a uniform magnetic field of 5.4 T. how fast do we need to rotate the coil
Tension is maintained in a string as in the figure below. The observed wave speed is 22 m/s when the suspended mass is 3.0 kg. What is the mass per unit length of the string?
A converging lens has a focal length of 15.5 cm If it is placed 72.5 cm from an object, at what distance from the lens will the image be
Mercury is approximately a sphere of radius 2.43 x 106 m. What is its circumference in kilometers and What is its surface area in square kilometers
Two particles of mass m and 2m are connected by massless rod oflength L. What is moment of inertia of the rod
A 3.0-m-long ladder, as shown in Figure 12.39, leans against a frictionless wall. The coefficient of static friction among the ladder and the floor is 0.40. What is the minimum angle the ladder can make by the floor without slipping?
Two horses pull a large crate of negligible mass at constant speed across a barn floor by means of two light steel cables. What is the work done by each horse if the box is moved a distance of 30 m
A 500.0 g pot of water at room temperature (20.0C) is placed on a stove. How much heat is required to change this water to steam at 100C
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