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In the figure below a crowbar is used to lift a weight. If a down ward force of 247 N is applied to the end of the bar, how much weight does the other end bear? The crowbar itself has negligible weight. (Let r1 = 28.5 cm and r2 = 5.50 cm.)
Find graphically the magnitude and direction of the resultant force F1→ + F2→. magnitude units direction degree counterclockwise from the +x axis.
White light is generally incident on two glass microscope slides with a thin layer of air of variable thickness among the slides, as seen in the figure below. Which wavelengths interfere constructively when reflected at a point where the air layer is..
Suppose that earth was formed as molten rock at some very high temperatures. Estimate the time for the earth to cool to 300 K.
A 2.10 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. What is the greatest acceleration of the mass
a survey meter has been accurately calibrated in mrhr. the measured value is then used directly by a technologist in
When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of 20 km (about the size of San Francisco). If a neutron star rotates once every second, (a) what is the speed of a particle..
Suppose you take a 2.0×10^2ohm resistor and a 0.40 H inductor and make a series circuit with a voltage source that has voltage amplitude 30 V and an angular frequency of 2.5×102 rad/s. What are the voltage amplitudes across the resistor and across ..
Verify the correctness of the superimposed exact solution in Example, Figure.Solve numerically the differential equation.
a) What is the tensile load f (N per m length of the weld) carried by the weld?
A mover has to move a heavy sofa of mass 66.0 kg to the second floor of the house. Find the tension in the rope
The electron in a hydrogen atom is in the first excited state, What is the quantum number n of the state into which the electron moves
An object 40.0 cm in front ofa certain lens is imaged 9.55 cmin front of that lens (on the same side as the object), I got this part. If the image were located, instead,53.0 cm in front ofthe lens, what type of lens would it be? converging lens, but ..
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