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A concave mirror has a focal length of 7 centimeter. Find the magnification of an object located 146 centimeter in front of this mirror?
A 75 kilogram man sits on a 3.7 kg chair. Obtain the pressure exerted on the floor by each leg of the chair
Discover the frequency of revolution of an electron by an energy of 500 eV in a magnetic field of 28.0 µT. Compute the radius of the path of this electron if its velocity is perpendicular to the magnetic field.
A doubly charged helium atom whose mass is 6.6 * 10^- 27 kg is accelerated by a voltage of 2400 V. What will be its radius of curvature if it moves in a plane perpendicular to a uniform 0.390 -T field? What is its period of revolution?
an automobile starts from rest and accelerates to a final velocity in two stages along a straight road. each stage
Calculate the minimum wavelength x-ray that can be produced when a target is struck by an electron that has been accelerated through a potential difference of 10.7 kV
A rigid container of nitrogen gas (N2) at 23° C contains 435 L at a pressure of 3.5 atm. If 26.6 kJ of heat are additional to the container, what will be the new temperature of the gas?
A swing is made from a rope that will tolerate a maximum tension of 1.0 * 10^3 N without breaking. What is the mass of the heaviest person who can ride the swing
Forces of 11.0 N norths, 19.5 N east, and 15.90 N south are simultaneously applied to a 3.70 kg mass as it rests on an air table. What is the magnitude of its acceleration.
A uniform ladder 10 m long and weighing 50 N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle by the ground, find the coefficient of static friction among the ladder and the ground.
A cube of ice is taken from the freezer at -8.5°C and placed in a 104 g aluminum calorimeter filled with 309 g of water at room temperature of 20°C. What was the mass of the ice cube
Steam locomotives have an eff of 17% and operate with hot steam temp of 425C. A.) what is the cold temp B.) what is the max eff if the cold temp 150C
An inventive child named Chris wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley, Chris pulls on the loose end of the rope with such a force that the spring scal..
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