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what is the average magnitude of the poynting vector 850 mi from a radio transmitter broadcasting isotropically equally
an ice hockey puck slides along the ice at 12 ms a hockey stick delivers an impulse of 40rm kg cdot ms causing the
coulombs law awhen spheres are charged with a power supply what is being controlled how does this lead to a charge on
in a youngs double slit experiment the slit separation is made to be exactly 4 at what angle will the third bright
monochromatic light of wavelength 500 nm is incident normally on a grating if the third-order maximum of the
to determine the location of her center of mass a physics student lies on a lightweight plank supported by two scales
a mirror with a focal length 20 cm has a 40 cm tall object placed 100 cm in front of it what is the position of the
a slit of width 20 m is used in a single slit experiment with light of wavelength 650 nm if the intensity at the
the drive propeller of a ship starts from rest and accelerates at 269 x 10-3 rads2 for 280 x 103 s for the next 125 x
relative to a stationary observer a moving objecta keeps its same lengthb appears longer than normalc appears shorter
a 0144 kg baseball leaves a pitchers hand at a speed of 225 ms if air drag is negligible how much work has the pitcher
a van der waals gas undergoes an isothermal expansion from specific volume v1 to specific volume v2i calculate the
you push your physics book 170 m along a horizontal tabletop with a horizontal push of 260 n while the opposing force
rachel is on the roof of a building h15 memters above ground she throws a heavy ball into the air with a speed v26ms at
the second harmonic sinusoidal standing wave in a pipe with both ends open has a wavelength of 200 m the sound speed is
a boat with a horizontal tow rope pulls a water skier she skis off to the side so the rope makes an angle of 130
the suspension system of your 1200 kg car has a natural oscillation frequency of 200 hz without functioning shock
a car chases a coyote down a road ending in a sheer cliff the car has a speed of 400 ms and the coyote has a speed of
a high-energy pulsed laser emits a 10-ns-long pulse of average power 34 1011 w the beam is 2110-3 m in radiusa
a 26-kg cart is rolling along a frictionless horizontal track towards a 19-kg cart that is held initially at rest the
a voltage v is applied to the primary coil of a step-up transformer with a 31 ratio of turns between its primary and
a 1945-w electric hair dryer is designed to work in the united states where the ac voltage is 120 v rms what power is
using the rayleigh criterion one concludes that using fixed wavelength light that it is not possible to resolve details
the vector position of a 350g particle moving in the xy planevaries in the time according to r1 3i 3jt 2jt2 at the
a 10-inch telescope is used to determine if what appears to be one star is actually two stars stars are so far away