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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
a slingshot consists of a light leather cup containing astone that is pulled back against two parallel rubber bands
the magnitude of each of the charges in the figure below is 865 10-12 c the lengths of the sides of the rectangles are
the single cable supporting an unoccupied construction elevator breaks when the elevator is at rest at the top of a 175
two 020-g metal spheres are hung from a common point by nonconducting threads which are 30 cm long both are given
an electron is held up against the force of gravity by theattraction of a fixed proton some distance above it how far
to push a piece of heavy furniture across the carpet usually takes more force to get it moving than it takes to keep it
the kinetic friction of one metal object sliding along anothermetal surface depends lease upona the nature of the
a ball thrown with an initial velocity of 12 ms at 30 degrees above the horizantal from a rooftop 40 m highcalculatea
the length of a steel bar increases by 0039 when itstemperature is increased from 0o c to 35o c calculate the