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a skater is initially spinning at a rate of 125 rads with a rotational inertia of 287 kg middot m2 when her arms
the acceleration due to gravity on the moon is 16 that on theearth if you place a 20 meter long pendulum on themoona
a 5 kg and a 3 kg box rest side by side on a smooth level floor a horizontal force of 32 n is applied to the 5 kg box
a cardiac defibrilator is used to shock a heart that is beatingerratically a capacitor in this device is charged to
suppose the decay constant of radioactive substance a is twice the decay constant of radioactive substance b if
a parallel plate capacitor has a capacitance of 120 nf there is a charge of magnitude 0800 muc on each plate a what is
a 300 g ball rolls around a 500 cm-diameter l-shaped track shown in the figureat 500 rpm what is the magnitude of the
an electron with kinetic energy 310kev circles in a plane perpendicular to a uniform magnetic field the orbit radius
a 010-kg balloon is filled with heliumdensity 0179 kgm3 if the balloon is a sphere witha radius of 63 m what is the
a car speeds along the curved exit ramp of a freeway the radius ofthe curve is 86 m a 68 kg passenger holds the arm
a potters wheel is rotating around a vertical axis through itscenter at a frequency of 17 revs thewheel can be
a 116 g stone is whirled in a horizontalcircle on the end of an 75 cm long stringthe stone takes 13 s to make
a capacitor is attached to a 500 hz generator the instantaneous current is observed to reach a maximum value at a
an observer at rest perceives a signal from a source that is 5 asmuch as the signals frequency with what speed and in
an uncharged capacitor and a resistor are connected in series to asource of emf if emf 600 v c 220 microfand r 100
the density of iron is 7860 kgm3 what is the mass of an ironsphere whose diameter is
if a metal target is bombarded with electrons which have been subjected to a potential difference of 44 kv the minimum
the coefficent of static friction between the floor of a truck and a box resting on it is 036 thetruck is traveling at
a violin string vibrates at 260 hz when unfingered at what frequency will it vibrate if it is fingered one half of the
a sodium ion with mass 232times10minus26 kg and charge160times10minus19 c is moving with velocity300times105 ms in the
a child slides down a snowcovered slope that makes an angle of 20 degrees with thehorizontal if the coefficient of
a hockey puck has an initial velocity of 45 ms and a final velocity of 26 msa if it travels 25 mduring this time what
a mass spectrometer has an adjustable magnetic field when themagnetic field is 1000e-1 t a singly ionizedhydrogen atom
a box of mass 0500 kg hangs from a vertical spring with k 300 nm the box is at rest at the springrsquos equilibrium