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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
part a - what volume of 225m hcl in liters is needed to react completely with nothing left over with 0250l of 0300m
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
what volume ml of a concentrated solution of magnesium chloride 900 m must be diluted to 350 ml to make a 275 m
the fundamental and first overtone for 14n16o are centred at 187606 cm 1 and 372420 cm 1 respectively evaluate the
aqueous hydrochloric acid reacts with zinc metal to yield hydrogen gas and aqueous zinc chloride write a net ionic
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
of the substances below the highest fuel value is obtained from charcoal bituminous coal natural gas hydrogen
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
if 1000ml water of at 500c is added to 1000 ml of water at 200c what temperature would the mixture of water reach
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