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a certain elevator cab has a total run of 190m and a maximum speed of 305mmin and it accelerates from rest and then
in which one of the following circumstances does the principle of conservation of mechanical energy apply even though
an object is thrown downward with an initial speed of 10 ms-1 from a height of 40 m above the ground at the same
a 6 muf and a 10 muf capacitor are connected in parallel across a 40 v dc battery the capacitors are then allowed to
a flashlight on the bottom of 396 m deep swimming pools ends a ray upward and at an angle so that the ray strikes the
assume that while moving into an apartment you move a refrigerator into place by sliding it across the floor the
a ball bearing is dropped from rest at a point a at the instant it passes a mark 47 m below a another ball bearing is
the spring in a clothespin is compressed 040 cm storing energy in the form of spring potential energy if the spring is
a soccer ball is released from the top of a smooth incline after 420 s the ball travels 111 m one second later it has
a horse ran the kentucky derby with times of 252 s 240 s 238s and 230 s for the quarter mile a discover his average
a cumin canister of mass m 04 kilogram slides across a horizontal frictionless counter with speed v 05 ms it then
a wagon is rolling forward on level ground where friction is negligible the person sitting in the wagon is holding a
the ballistic pendulum was used to measure the speeds of bullets it consists of a large block of wood of mass m 54
a skateboarder slides down a frictionless ramp inclined at an angle of 30 degree to the horizontal he then slides
a baseball is thrown with a velocity of 31 ms at an angle of 40o from a height of 18 metera find the vertical and
the mass of the moon is 74 x 1022 kilogram and its mean radius is 175 x 106 meter find the acceleration due to gravity
the volume rate of a flow in a horizontal pipe is 40 ls the diameters of the pipe at points a and b are 40 cm and 50 cm
the gravitational attraction between two objects varies directly as the product of their masses and inversely as the
a grandfather clock is controlled by a swinging brass pendulum that is 11 m long at a temperature of 30degca what is
pushing on the pump of a soap dispenser compresses a small spring when the spring is compressed 050 cm its potential
two objects attract each other with a gravitational force of magnitude 99 x 10-9 newton when separated by 192
ricardo mass 80 kilogram and carmelita who is lighter are enjoying lake merced at dusk in a 30 kilogram canoe when the
a 17000-kg airplane lands with a speed of 82 ms on a stationary aircraft carrier deck that is 115 m long find the work
a bicycle rim has a diameter of 065 rm m and a moment of inertia gauged about its center of 025 rm kgcdotrm m2what is