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An object is placed to the left of a convex lens and on the optical axis. The object is 31 cm from the lens and the focal length of the lens is 72 cm. What is the magnification of the image formed by the lens? You do not have to enter units for this problem.
Two particles with Q1 = 50 µC and Q2 = 79 µC are initially separated by a distance of 2.4 m, What is the change in the electric potential energy
The George Washington bridge, that spans the Hudson River between New York and Jersey, is 4670 feet long and is made out of steel, How much does it expand in length between winter and summer.
A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution
An incredibly large slingshot is stretched 1.5 meters to launch a 180.0-gram projectile with a speed sufficient to escape from the Earth (11.2 km/s). How many people would be required to stretch the slingshot
A luminous object is 4.80m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object. How far should the mirror be from the wall?
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
q1. assume unpolarized light of intensity 197 wm2 falls on the polarizer in the figure and the angle in the drawing is
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.80 cm into the water. What is the weight of the truck
Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.7 x 10-2 m and a thickness of about 1.1 x 10-3 m. How far does the top surface move relative to the bottom surface
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
A uniform electric field of magnitude E = 500 N/C makes an angle of ? = 61.0° with a plane surface of area A = 3.80 m2, Find the electric flux through this surface
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