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a generation is about one third of a lifetime approximately how many generations have passed since the beginning of
through 5 successive 097 min intervals a runner moves at the following constant speeds 0396 kmmin 0222 kmmin 0160 kmmin
1 discover the wavelength of a sound wave which has a frequency of 410 hz the speed of sound is 343 ms2 consider light
a mass of 079 kg attached to a spring by a spring constant of 67 nm is set into simple harmonic motion what is the
a point charge of -400nc is at the origin and a second point charge of 600nc is on the x axis at x0800m discover the
discover the net force acting on a 25c charge placed at the origin from 3 equal charges of -125c placed at the
the figure shows an electron entering a parallel-plate capacitor by a speed of 6times106ms the electric field of the
the height of lava ejected can be modelled by h-5tt-11 where h is height in meters and t is time in seconds since it
a stone is dropped vertically from the top of a tower of height 40 m at the same time a gun is aimed directly at the
consider a parallel-plate capacitor with plates of area a and with separation d what will happen to the capacitance if
compute the components of the electric field at the point p shown in figure e29 with the y-direction upward and the
a point particle with charge ndash3q where q 420 nc is located at the origin of a coordinate system another point
for the wave represented with the following equation yxt15cos2pie20x3t m what is the direction of wave propagation what
assume that electrical attractions rather than gravity were responsible for holding the moon in orbit around the
a red car and a green car identical except for the color move toward each other in adjacent lanes and parallel to and x
an electron with an initial speed of 660000 ms is brought to rest by an electric field1 what was the potential
a flat circle of radius 19cm is placed in a uniform electric field of magnitude 58times102ncpart awhat is the electric
gold which has a density of 1932 gcm3 is the most ductile metal and can be pressed into a thin leaf or drawn out into a
light striking a metal plate can eject electrons from the plates surface this is called the photoelectric effect
true or false the electric field1 points in the same direction as the electric force if the probe charge q is positive
polarizability of a carbon atomtry rubbing a plastic pen through your hair and youll discover that you can pick up a
what is the average speed at which water enters the hose at the pump on a fire truckhose radius 00300m nozzle radius
the sides of a small rectangular box are gauged to be 170 plusmn 002 cm 210 plusmn 005 cm and 33 plusmn 02 cm long
two identical conducting spheres are separated by a fixed center-to-center distance of 47cm and have dissimilar charges
a marathon runner completes a 42188-km course in 2 h 21 min and 23 s there is an uncertainty of 30 m in the distance