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find the mechanical energy of a block spring system having a springconstant of 25 ncm and an amplitudeof 29 cmwhen the
a child throws a softball straight up with an inital speed10msa find the maximum height above the childs hand that the
two capacitors one 120 muf and the other of unknown capacitance are connected in paralel across a battery of emf 90v
two identical wires with a weight of 495e4 nm are located one above the other in a vertical plane above the surface of
a 349kg child starting from rest slides down a water slidewith a vertical height of 190 ma what is the childs speed
you pull downward with a force of 29n on a rope that passes over adisk-shaped pulley of mass 14kg and radius 0075m the
uniform metal rod with mass of 34 kg and length of 15 m is attached to a wall by a hinge at its base a horizontal wire
a projectile is fired with an inital speed ofvi20ms at an angle theta30o with the horizontala find the horizontal
how long does it take electrons to get from a car battery to the starting motor assume the current is 310a and the
a common flashlight bulb is rated at 0300a and 270v the values of the current and voltage under operating conditions
when a turntable rotating at 33 revmin is shut off it comes torest in 26 s assuming constant angular acceleration finda
a spring is hung from the ceiling when a coffee mug isattached to its end it stretches 20 cm before reaching itsnew
an air-track glider attached to a spring oscillates between the 120 cm mark and the 580 cm mark on the track the glider
a cubical block of wood 0110 m on a sideand with a density of 560 kgm3 floats in a jar of water oil with a density of
a model airplane flies ina horizantal circle at the end of a50 meter long control wire with a speed of 40 ms the plane
a raindrop falls at a constant speed how much work is done byair resistance as the drop falls 250 m the raindrops mass
an atwood machine consists of two masses that are connected bya taut string that passes over a perfect pulley initially
a ceiling fan is turned on and a net torque of 19 nmiddotm is applied to the blades the bladeshave a total moment of
you are watering your lawn with a hose when you put your fingerover the hose opening to increase the distance the water
a point charge m1 g at the end of an insulating string of length 55 cm is observed to be in equilibrium in a uniform
lurking alligators an alligator waits for prey byfloating with only the top of its head exposed so that the preycannot
in the figure two particles each with mass m 079 kgare fastened to each other and to a rotation axis at oby two thin
a meter stick is held vertically with one end on the floor and is then allowed to fall find the speed of the other end
a 330 kg wheel essentially a thin hoop with radius 100 m is rotating at 295 revmin it must be brought to a stop in 110
a 175 kg block at rest on a ramp of height h when the block isreleased it slides without friction to the bottom of the