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a uniform rod of length l rests on a frictionless horizontalsurface the rod is pivoted about a fixed frictionless axis
a 124 g bullet is fired horizontally into a 96 g wooden block initially at rest on a horizontal surface after impact
a collision between two pucks on an air-hockey table puck a has a mass of 0025 kg and is moving along the x-axis with a
a 17 g bullet is accelerated in a rifle barrel 734 cm long to a speed of 493 ms use the work-energy theorem tofind the
workers are dragging a 610kg block up a dirt ramp that isinclined at 13o above the horizontal they are exertinga 5600-n
a coal power plant with 30 efficiency burns 10 million kilogramsof coal a day take the heat of combustion of coal to be
a parallel-plate capacitor has a plate separation of 50 cm if thepotential difference between the plates is 2000 v
suppose a charge q is placed on earth and another charge q isplaced on the moona find the value of q needed to balance
a driver releases an air bubble of volume 20 cm3 from adepth of 15 m below the surface of a lake where the temperature
two water samples are in well-insulated cups the mass of onesample is 00610 kg and its temperature is 110o c the other
an alpha particle charge 2e mass 664 x 10-27 moves head-on ata fixed gold nucleus charge 79e if the distance of closest
a square is 10 m on a side charges of 40 uc are placed in twodiagonally opposite corners in the other two corners are
consider a plot of the displacement on the y-axis vs applied forceon the x-axis for an ideal elastic spring the scope
the equation connectin sp and f for a simple lens can be employed for spherical mirrors toonbsp a concave mirror with a
a 260 kg block atrest on a horizontal frictionless table is connected to the wallvia a spring with a spring constant k
an object 175 cm high is placed 36 cm in front of a concave mirror of focal length 12 cm calculate the image distance
a 08 kg block is on a surface with negligible friction when the surface is horizontal the spring has an equilibrium
a sled traveling at a speed of 50 ms slows to a stop 40 m fromthe point where its passenger rolled off what is the
an 825 kg fullback moving east with aspeed of 54 ms is tackled by a870 kg opponent running west at328 ms and the
two people are standing on a 25 m longplatform one at each end the platform floats parallel to the ground on a cushion
the focal length of diverging lens is negativenbsp if f-20cm for a particular diverging lens where well the image be
a simple harmonic oscillator has a total energy of ea determine the kinetic and potential energies when thedisplacement
calculate the volume of a piece of glass and a similarpiece of metal at 0 degrees c then do the calculation againat 80
a machine shop has 120 equally noisy machines that together produce an intensity level of 92 dbnbsp if the intensity
the radius of a typical human eardrum is about 40 mm find the energy per second received by an eardrum when it listens