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blue light of frequency 65 1014 hz falls on the surface of potassium which has a work function of 226 ev find the
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a human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm i know the energy of the light is
one type of slingshot can be made from a length of rope and a leather pocket for holding the stone the stone can be
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problem meter stick pendulumconsider pendulum formed from a meter stick pinned at the end the center of mass com is at
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an electric motor under steady load draws 97 amperes at 110 volts it delivers 093 kw of mechanical energy the
a typical home may require a total of 200103kwh of energy per month suppose you would like to obtain this energy from
work and kinetic energy lab investigating the relationship between the work done on a cart and the change in the
light beams a and b are depositing the same amount of energy per square meter on a surface but the wavelength
a certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20 oc and its pressure is 1 atm
a uniform stick d 1 m long with a total mass of 251 g is suspended vertically from a frictionless pivot at its top end
a bowling ball 26 cm in diameter is slid down an alley with which it has a coefficient of sliding friction of micro
a block of mass m1 3 kg rests on a table with which it has a coefficient of friction micro 067 a string attached to
a certain non-uniform but cylindrically symmetric cylinder has mass 7 kg radius 17 m and moment of inertia about the
ethanol has an index of refraction of 136 and quartz has an index of refraction of 154 if light in ethanol is incident
light traveling in air enters a material at an angle of 25 degrees with respect to the normal the refracted beam in the
a ray of sunlight is passing from diamond into crown glass the angle of incidence is 358deg the indices of refraction
a childs sled has rails that slide with little friction across the snow logan has an old wooden sled with heavy iron