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the story goes that a boy in holland saved his country from being flooded by plugging a hole in the sea wall with his
1 if you do 100 j of work to elevate a bucket of water what is its gravitational energy relative to its starting
1 to cause a 25 kg object to experience an acceleration of 2 ms2 the net force that needs to be applied to the object
an object is under the force f k1x i - k2y j calculate the work done by this force when the objecta moves on the
1 a block of mass 25 kg is placed against a compressed spring k 2900 nm at the bottom of an inclined plane as shown
explain how power is created using hydraulics and how a little cylinder on the tractor can raise or lower extreme
calculate the work done by a ven der waals gas with equation 314 as the equation of state in expanding from a volume v1
explain the concept of work energy and power also describe various types of mechanical energy compared to kinetic
on a frictionless ice a variable force p in newtons expressed by p 5 6 t is applied to an initially stationary block
your car is stuck in a mud hole you are alone but you have a long stong rope having studied physics you tie the rope
two blocks are connected by a massless string and are held in position by another massless string along a frictionless
the simple 2 kg pendulum is released from rest in the horizontal position as it reaches the bottom vertical position
the mass of one small ball is 159 g and the mass of another is 881 g if the center to center distance between thse two
question a curve of radius 56 m is banked so that a car traveling with a uniform speed of 54 kmhr can round the curve
a load of steel of mass 6000 kg rest on a flat bet truck it is held in place by metal brackets which can exert a
1 a plane traveling at 185 ms is brought to rest in a distance of 135 meters to the nearest hundredth of a ms2 what is
a the displacement of a particle in meter is given by d 203t3i4t2-t-15jwhat is its distance use polar format from the
a sphere with radius 60 cm has its center at the origin equal charges of 2 microc are placed at 72 intervals along the
a block with mass m2 is placed on an inclined plane with slope anglenbspalpha and is connected to a second hanging
if an object with a mass of x kg sits on a frictionless table and another object with a mass of y kg is connected to it
block a in the figure weighs w1 and block b weighs w1 the coefficient of kinetic friction between all surfaces is uk1
find the force p necessary to push a 506 kg block down an incline of 324 degrees with an acceleration of 178 ms2 p is
1 a cannon shoots a ball at an angle theta above the horizontal ground a neglecting air resistance use newtons second
an 050 kg object is attached to one end of a spring and the system is set into simple harmonic motion the displacement
holding a long rope by its upper end you lower it onto a scale the rope has a mass of 0169 kg per meter of length and