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The bellows of an adjustable camera can be extended so that the largest distance from the lens to the film is 1.21 times the focal length.
If the focal length of the lens is 5.22 cm, what is the distance from the closest object that can be sharply focused on the film? Answer in units of cm.
You wrap a single layer of copper wire (diameter .812mm) around a tube (diameter 4cm length 28cm) to create an air filled solenoid. how many turns are there per centimeter
A thin, uniform, rectangular sign hangs vertically above the door of a shop. The sign is hinged to a stationary horizontal rod along its top edge. Find its angular speed immediately after the impact
a 24-hp electric motor provides power for the elevator in a 6 story building. if the total weight of the loaded
Gabriela, hunting for her favorite wooden horse, is running on the ground around the edge of a stationary merry-go-round. find the shortest time it takes for Gabriela to catch up with the horse
a ball is thrown horizontally from a high cliff with a velocity of 5 ms. ignoring the slowing of the ball due to air
Assume that a low-density gas has only one resonant frequency, ?0, and show that n ? Nq^2 / (2?0me(?0^2-?^2) ) starting with n^2 = Nq^2 / (2?0me(?0^2-?^2) ). Fully justify any mathematical expansion you employ.
Consider a concave mirror with a focal length of 18.90 cm. Find the location of the image when the object is 10.20 cm from the mirror. What is the magnification of the image? What is the radius of curvature of the mirror in cm? Is is virtual and u..
The electric field in an electromagnetic wave (in vacuum) is described by E =Emaxsin(kx-ωt), Find the amplitude of the corresponding magnetic wave. Answer in units of T.
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. obtain the work done on the jet by the catapult
a football is kicked at ground level with a speed of 18.0 m/s at an angle of 35.0 degrees to the horizontal. how much later does it hit the ground
A stone with a mass of 0.700 is attached to one end of a string 0.8 long. The string will break if its tension exceeds 65.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.
When a glass rod is rubbed by silk it (the rod) becomes positively charged. This happens because___ Electrons are created on the rod. Electrons are transferred from the silk to the rod
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