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It is desired to cast the image of a lamp magnified 5 times upon a wall 4 m distant from the lamp.what kind of spherical mirror is required and its position
Find the magnitude of the gravitational force a 63.9 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 10^24 kg and a radius of 6.37 × 10^6 m.
To keep her dog from running away while she talks to a friend, Susan pulls gently on the dog's leash with a constant force given by F = (2.1 N ) ^x+ (1.5 N )^y, How much work does she do on the dog
Find an equation for the terminal velocity of a sphere falling through a viscous fluid (like water or blood). How does the terminal velocity scale with the size of the falling object? Assume that the density of that object is much larger than that..
A 0.60 kg mass vibrates according to the equation where x is in meters and t is in seconds. find out (a) amplitude, (b) frequency, (c) total energy, and (d) kinetic energy and potential energies when x = 0.30 m.
A spring with an unstrained length of 0.071 m and a spring constant of 1.5 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
What is the de Broglie wavelength (in angstrom) of an electron at 100 eV? What is the wavelength for electrons at 12 keV, which is typical of electron microscopes? Comparing this to visible light comment on the advantages of electron microscopes.
Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2 = +5.12C. What is the distance r between the two charges
a wire carries a steady current of 4.50 a. a straight section of the wire is 0.750 m long and lies along the x axis
An iron rod has a length of 0.5 m and a cross-sectional area of 6.20 10-4 m2. One end of the rod is in contact with boiling water, what is the mass of ice per second that melts
Jason takes off from rest across level water on his jet-powered skis. The combined mass of Jason and his skis is 75 kg, What is Jason's top speed
You are standing 4.5m from a convex security mirror in a store. You estimate the height of your image to be half of your actual height. Estimate the radius of curvature of the mirror
A mass m1 = 3.9 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 5.7 kg which hangs freely from the string. How much work is done by gravity on the two block system
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