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A lens that has a focal length of 3.99 cm is used as a magnifying glass.
(a) To obtain maximum magnification and an image that can be seen clearly by a normal eye, where should the object be placed?
(b) What is the magnification?
An old trick to find out if a train is coming is to put your ear on the rails of the track. Why is this more effective than just listening for the sounds the train makes in air.
A diffraction grating with 600 lines per mm is illuminated with light of wavelength 520. What is the distance between the two fringes
A stretched spring stores 2.2 of energy. How much energy will be stored if the spring is stretched three times as far
A horizontal force F{x} =F0 (1-t / T), which decreases from F0 at t =0 to zero at t =T, is exerted on the object. Find an expression for the object's velocity
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. determine the recoil velocity
A block of wood has a mass of 3.70 kg and a density of 632 kg/m3. What mass of lead is needed if the lead is on top of the wood
Let's say your can has covers a distance of 3 m in 5 seconds under constant acceleration. Use kinematics equations and Newton's second law to calculate the acceleration of the can
A series RC circuit has a time constant of 1.000 s. The battery has an emf of 48.0 V, and the maximum current in the circuit is 480 mA. What is the value of the capacitance
Unpolarized light is incident on a system of 4 polarizers. Where the preferential direction of the second is 20 degrees with respect to the first, What is the intensity of the transmitted light
two objects moving with a speed travel in opposite directions in a straight line. the objects stick together when they
Suppose a formula for gain in heat energy of an object is H = m(A - B), where m = mass and (A - B) is its rise in temperature between A degrees and B degrees (as in #4). Write an expression for the absolute uncertainty, delta-H, in terms of m, del..
Draw a ray diagram depicting the following: and object is 20cm in front of a concave mirror whose radius of curvature is 25cm. Calculate the image position using the mirror equation
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