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A weightless rod of length 2l carries two equal masses 'm', one tied at lower end A and the other at the middle of the rod at B. The rod can rotates in vertical plane about a fixed axis passing though C. The rod is released from rest in horizontal position. The speed of mass B at the instant , rod become vertical is
(1) square(3gl/5)
(2) square(4gl/5)
(3) square(6gl/5)
(4) square(7gl/5)
A block of ice at 0 degrees C, whose mass is initially 30.0 kg, slides along a horizontal surface, starting at a speed of 5.56 m/s and finally coming to rest after travelling 21.8 m. figure out the mass of ice melted (in grams) as a result of frictio..
what is the terminal velocity of a 6.00-kg mass object in falling with a drag force with a magnitude that depends on
Two small, positively charged spheres have a combined charge of 5.02×10-5 C. what is the charge on the sphere with the smaller charge
If the activation energy for the vacancy formation is given as 0.77 eV for aluminium at (650 degrees Celcius) ^3, what would be the number of vacancies at 650 degrees Celsius? The atomic weight and the density of aluminium is 26.98 g/mol and 2.62 ..
A piece of sandston with a bulk volume of 1.3 cc is contained ina 5-cc cell filled with helium at 760 mm Hg. Temperature ismaintained constant and the cell is opened to another evacuatedcell the same volume. The final pressure in the two vesselsis 33..
A puck slides across a smooth, level tabletop at height H at a constant speed vo. It slides off the edge of the table and hits the floor a distance x away as shown in the figure. What is the algebraic relationship between the distances x and H?
A hydraulic jack is made with a small piston 1.2 cm indiameter that is used to move a large piston 6.1 cm in diameter. how heavy aload can he lift with the jack
does the level of social responsibility exhibited by starbucks have any effect on how other coffee retailers are
A long straight wire is carrying a current of 2.4 A in a region where the magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT, what is the magnitude of the force on 3.0 m of the wire?
A 54.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.646 and 0.321, respectively. What horizontal pushing force is required to just start the crate moving
When gasoline is burned, it gives off 46,000 J/gram of heat energy. what is the average horsepower output of the engine
Two 5.5 5.5 metal plates are separated by a 0.21--thick piece of Teflon. compute the maximum potential difference between the disks
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