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A meter stick is found to balance at the 49.7cm mark when placed on the fulcrum. When a 41g mass is attached at the 23cm mark, the fulcrum must be moved to 39.2cm mark for balance. what is the mass of the meter stick?
A computer disk is 8.0 cm in diameter. A reference dot on the edge of the disk is initially located at theta=45 degrees. The disk accelerates steadily for 0.50 s, reaching 2000 rpm, after those coasts at steady angular velocity for another 0.50 s.
An astronomical telescope uses an objective power +2.00 D. If the length of the telescope is 52 cm, what is the focal length of the eyepiece
A 27-cm-long wire with a linear density of 25 passes across the open end of an 83-cm-long open-closed tube of air. What is the tension in the wire
A thin rod L meters long has a linera density that varies as \(\rho (x) = \rho_{0} e^{-ax}\). Find the mass of the rod
Two protons, each having a speed of 0.970c in the laboratory, are moving toward each other. Determine the momentum of each proton in the laboratory
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. estimate the moon\'s radial acceleration
Liquid nitrogen boils at 77.00 K. Would this experiment needs to be altered if we used water, which boils at 373 K? Why.
A spring-loaded cannon aimed at 40 degrees above the horizontal is on the last car of a long train of flat cars. What is the horizontal range observed by a person standing on the ground
If the horn acts like an organ pipe which is open on each end, what is the length of the organ pipe in cm, What is the beat frequency that you hear
A straight conductor carrying a current of 19 A splits into identical semicircular arcs of radius 13.3 m. The positive direction is out of the screen. What is the magnetic field at the center of the resulting circular configuration?
A piece of rock weighs 301 N in air and has an apparent weight of 202 N when suspended under water. What are the volume and density of the rock
A star is moving away from Earth at a speed of 2.4 X 10^8 m/s. find the wavelength as measure by an Earth observer
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