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two blocks a and b with mass 50 kg and 100 kg respectively are connected by a string as shown in the figure below the
water flowing out of a horizontal pipe emerges through a nozzle the radius of the pipe is 21 cm and the radius of the
a parallel-plate air-filled capacitor having area 35 cm2 and plate spacing 12 mm is charged to a potential difference
one way to administer an inoculation is with a gun that shoots the vaccine through a narrow opening no needle in
a ball of mass 0120 kg is dropped from rest from a height of 125 m it rebounds from the floor to reach a height of 0600
a fuel pump sends gasoline from a cars fuel tank to the engine at a rate of 00574 kgs the density of the gasoline is
an object is solid throughout when the object is completely submerged in ethyl alcohol its apparent weight is 158 n
a lost shipping container is found resting on the ocean floor and completely submerged the container is 68 m long 26 m
a dentists chair with a patient in it weighs 1960 n the output plunger of a hydraulic system begins to lift the chair
how many square meters of pv would it take to provide 1 kw for a world population of 6 billion if these cells were
a person who weighs 605 n is riding a 98-n mountain bike suppose the entire weight of the rider and bike is supported
a solid concrete block weighs 150 n and is resting on the ground its dimensions are 0400 m 0200 m 0100 m a number of
a commercially available solar cell module puts out 3volts and 01 amp and measures 5cm by 8cm how large an array is
a gold prospector finds a solid rock that is composed solely of quartz and gold the mass and volume of the rock are
a weight w is supported by attaching it to a vertical uniform metal pole by a thin cord passing over a pulley having
if the solar cells use have an efficiency of 10 what area of land is needed to produce an output of 1000 mw assume that
a block of wood 10 cm by 10 cm by 40 cm with mass 32 kg and uniform density stands on its end on level ground in the
consider the arrangement of ideal massless cables and a 450cm long 10kg horizontal iron bar which are used to hang a
if a commiercial solar cell with a maximum output of 2 amps at 05v costs 30 what will be the cost of a photovoltaic
a right triangular plate with height 4 ft and a base of 6 ft is submerged vertically in water so that the top is 2 ft
a 90-tonne 1 t 1000kg spacecraft moving in the positive x-direction at 048 ms docks with a 75-tonne craft moving in
a 130g ball moving at 035 ms in the positive x-direction is subject to a 015 n force in the negative y-direction for 25
prove that any ray coming in parallel to the principal axis of a parabolic surface will reflect towards the focal point
an air-filled parallel-plate capacitor has a capacitance of 15 pf the separation of the plates is doubled and wax is
the space between two concentric conducting spherical shells of radii b 240 cm and a 120 cm is filled with a