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a factory worker pushes a 286 kg crate a distance of 49 m along a level floor at constant velocity by pushing downward
two cylindrical bars each with diameter of 240 cm are welded together end-to-end one of the original bars is copper and
the parallel plates in a capacitor with a plate area of 580 cm2 and an air-filled separation of 490 mm are charged by a
ca wire carries a steady current of 240 a a straight section of the wire is 0750 m long and lies along the x-axis
a guitar string destined to be an upper e string has length 9800 cm and mass 0460 ga what is its mass per unit length b
a person wants to push a lamp mass 72 across the floor for which the coefficient of friction is 020 calculate the
a rock is launched from a wall 15 m above a moat at a speed of 29ms at an angle of 36 deg above horizontal how far from
assume that the intensity of solar radiation incident on the cloudtops of the earth is 1340 wm2 calc the total power
a nonconducting spherical shell with an inner radius of 74 cm and an outer radius of 99 cm has charge spread
suppose we have a rocket that has an acceleration of 892 ms2 in the x direction what would the acceleration in the y
a 49 kg cart is placed on a frictionless air track with an angle of 476o a 242 kg mass is attached to the cart using a
if the spring of a jack-in the-box is compressed a distance of 800cm from its relaxed lenght and the released what is
a rectangular block that is 10 m long and 40 kg in weight is resting on top of another longer smaller rectangular block
a coil is formed by winding 280 turns of insulated 14 gauge copper wire diameter 16 mm in a single layer on a
consider a uniformly charged sphere of radius r and charge density describe the motion of a test charge q that moves
what is the influence of friction on banked highway turns to address this question first consider a car that encounters
every 5 seconds between a lightning flash and the following thunder gives the distance to the flash in miles assuming
to help keep her barn warm on cold days a farmer stores 865kg of warm water how many hours would a 200-kilowatt
in figure 5-49 three connected blocks are pulled to the right on a horizontal frictionless table by a force of
the captain of a plane wishes to proceed due west the cruising speed of the plane is 285 ms relative to the air a
the statement is the effects of scaling are good for some creatures and bad for others i understand the effect of
a bullet is fired horizontally with an initial velocity of 900ms at a target located 150 ms which takes 167 seconds to
will a grandfather clock which is accurate at 20c run fast slow or the same on a 30c day the clocks pendulum consists
a mountain climber in the process of crossing between two cliffs by a rope pauses to rest she weighs 576 n as the
a piece of ice with a mass of 30 grams at 0deg c is added to 100 ml of water at 20deg c assuming no loss of heat to the