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The drawing shows an A-shaped ladder. Both sides of the ladder are equal in length. This ladder is standing on a frictionless horizontal surface, and only the crossbar (which has a negligible mass) of the "A" keeps the ladder from collapsing. The ladder is uniform and has a mass of 14.2 kg. Determine the tension in the crossbar of the ladder.
The distance between the eyepiece and the objective lens in a certain compound microscope is 12.7 cm. The focal length of the objective is 0.540 cm, determine the overall magnification of the microscope
A thin spherical shell of silver has an inner radius of 2.20 10-2 m when the temperature is 17° C. Find the change in the interior volume of the shell
The weight of a star is usually balanced by two forces: the gravitational force, acting inward, and the force created by nuclear reaction, acting outward. What is the radius of the geostationary orbit for this neutron star
A potential difference of 90 mV exists between the inner and outer surfaces of a 7.5 nm thick cell membrane. What is the electric field inside the cell membrane and inside the actual cell. Explain
Copper wire (resistivity 1.7x10-8 italic capital omega space straight m , circular cross section with radius 2.34 mm) is used to form 2 thousand circular loops of wire in a solenoid
Let%u2019s say you have a 1.0 kg mass at rest, struck by a 2.0 kg mass traveling at -2.0 m/s. What is the velocity of the combined mass
A cylinder with a movable piston contains 12.1 moles of a monatomic ideal gas at a pressure of 1.5 × 105 Pa. What is the change in volume of the gas
A moving 4.10 kg block collides with a horizontal spring whose spring constant is 260 N/m. The block compresses the spring a maximum distance of 15.00 cm from its rest position.
A 400lb woman stands on a floor in flat soled shoes. Which person is more likely to dent the floor
A fisherman weighing 60 kg in a boat of mass 30 kg at rest throws a 5 kg jug of water toward the east. what is the speed of the boat
how high does it rise above the point of release. guess the speed of the car just before braking.
The rotational spectrum of the HCl molecule contains lines with wavelengths of 0.0604, 0.0690 ,0.0804 ,0.0964 , and 0.1204 mm. What is the moment of inertia of the molecule
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