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To focus a camera on objects at dissimilar distances, the converging lens is moved toward or away from the image sensor. A camera by a telephoto lens (f= 200.0 mm) is to be focused on an object first located at a distance of 3.5 m and then at 50.0 m. Over what distance should the lens be movable?
An electron accelerated from rest through a voltage of 520 V enters a region of constant magnetic field. If the electron follows a circular path with a radius of18 cm, what is the magnitude of the magnetic field?
An explosion breaks an object into two pieces, one of which has 1.5times the mass of the other. how much kinetic energy did each piece acquire
Someone at a fifth-floor window (20 m above the ground) hurls a ball downward at 40.0° at a speed of 14.0 m/s. How long does the ball take to reach the sidewalk
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
A 30-06 caliber hunting rifle fires a bullet of mass 0.0122 kg with a velocity of 247 m/s to the right. The rifle has a mass of 3.2 kg. What is the recoil speed of the rifle as bullet leaves the rifle.
A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 4 kg and a cross-sectional area of 40 cm2. Determine the pressure inside the cylinder
The automobile afterwards undergoes a uniform acceleration of -4 m/s2 because of a red light and comes to rest. It remains at rest for 54.6s and next accelerates back to a speed of 25.6m/s at a rate of 2.85m/s2.
unpolarized light with an intensity Io=16 W/m2 is incident on a pair of polarizers. what is the intensity of light transmitted through the first and second polarizer
an accelerator increases the total energy of electrons uniformly to 10 gev over a 3000 m path. that means that at 30 m.
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
Using the periodic boundary condition, ?k(x+L) = ?k(x) and noting that e(i2pn)=1, determine the allowed values of k in terms of L and an integer n. Are negative values of n allowed?
How much power does an automotive battery contain that can furnish 750 Amperes at 12.7 volts for a short period of time
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