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Problem: A camera is equipped with a lens with a focal length of 37 cm. When an object 2.1 m (210 cm) away is being photographed, what is the magnification. Please answer the following question.
How can you determine if a given vector can represent a magnetic field? State and briefly discuss the basic definition of the divergence of a vector.
power lines have a limit on the maximum size of the electric fieldthey produce. in most states, a maximum of 5kN/C at about 20 m fromthe wires is allowed. determine how much charge per unit length is onthe wire
Three positive particles of charges 1 ?C, 2 ?C, 3 ?C, and 4 ?C, are located at the corners of a square of side 1 cm. Calculate the potential in the center of the square
A rocket of mass 4.5105 kg is in flight. Its thrust is directed at anangle of 50.5° above the horizontaland has a magnitude of 6.30 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above thehorizo..
The second lens is a biconcave thin lens (index of refraction n = 1.57) and has a radius of curvature of 25.0 cm for both front and back surfaces. Where will be the image form?
Suppose a manufacturing plant has an average sound intensity level of 97.0 dB created by 25 identical machines. Find the total intensity created by all the machines
Planet X is 307 times more massive than Earth, and its radius is 10.8 times Earth's radius. How many times more would you weigh on Planet X
An outside loudspeaker (considered a small source) emits sound waves with a power output of 100 W. (a) Find the intensity 10.5 m from the source. W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experi..
Assume a spacecraft is orbiting the earth at a constant radius of 7.00x10^3km. At t=0 a lateral rocket is fired that imparts an inward-directed radial velocity. What is the minimum radial velocity needed to produce a parabolic trajectory, and what wi..
All through an experiment, a block of wood with a mass of 250 g is placed on an inclined plane. While the plane is raised to an angle of 43o, the block slides down the plane at a constant speed.
consider two point charges located on the x axis one charge -12.0 is located at -1.650 the second charge 31.0 is
The bulk modulus for helium is 1.01x105 N/m2 and its density is 0.179 kg/m3. How many times the speed of sound in air (331m/s) is the speed of sound in helium?
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