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the specific heat capacity of a material is 1150 jkgmiddotdegc the temperature of 10 kg of this solid material is
a wodden raft has a density of 05103kgm3 and dimension of 305m61m0305ma how deep does it sink into the water when
estimate the number of breaths taken by a human being during an average lifetime we estimate an average respiration
a water droplet of radius 22times102 remains stationary in the air if the downward-directed electric field of the earth
the output piston of a hydraulic press has a cross-sectional area of 020 cm2a how much pressure on the input piston is
an air-traffic controller observes two aircraft on his radar screen the first is at altitude 950 m horizontal distance
a load of 50kg is applied to a lower end of a steel rod 80cm long and 06cm in diameter how much will the rod stretch
a 2774-n force is applied parallel to a 238-degree incline to pull a 295-kg crate from rest up the incline to a final
a swimming pool has dimensions 260 m multiplied by 90 m and a flat bottom when the pool is filled to a depth of 250 m
a 60kg student carrying a 50kg school bag walks up to flights of stairs in 30 seconds to reach the library each stair
a a stone is thrown vertically upward at a speed of 2840 ms at time t0 a second stone is thrown upward with the same
a wire carrying a current is placed in a uniform magnetic field when a current of 37a flows in the wire there is a
a single force acts on a 28 kg particle-like object in such a way that the position of the object as a function of time
a 2083 gram pendulum bob on a 192 meter long string is pulled to a height above its lowest position such that it makes
a person pulls a sled for a distance of 370m along the snow with a rope directed at 20 degrees above the snow the
a hockey puck is struck with a force of 40n in an ice hockey arena assuming the ice provides a constant frictional
a 550-kg car traveling at 240 ms collides head on on with a 680-kg pick up truck what is the momentum of the car before
the fundamental and first overtone for 14n16o are centred at 187606 cm 1 and 372420 cm 1 respectively evaluate the
the near point of a naked eye is 25 cm when placed at the near point and viewed by the naked eye a tiny object would
a student sees a newspaper ad for an apartment that has 1365 square feet ft2 of floor space how many square meters of
a 60 kg man is ice-skating due north with a velocity of 60 ms when he collides with a 36 kg child the man and child
an object has a total energy of 50 x 1015 j and a kinetic energy of 20 x 1015 j what is the magnitude of the objects
a tennis ball with a speed of 119 ms is thrown perpendicularly at a wall after striking the wall the ball rebounds in
a high fountain of water is located at the center of a circular pool as in the figure a student walks around the pool
a rocket moves upward starting from rest with an acceleration of 320 ms2 for 432 s it runs out of fuel at the end of