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a 300 cm times 500 cm rectangular piece of copper is at a temperature of 100degc the coefficient of linear expansion of
a 100 liter water tank is filled to the brim with water when the temperature is 500degc water has a coefficient of
a model rocket rises with constant acceleration to a height of 38 m at which point its speed is 240 msa how much time
a bat flies toward a wall at a speed of50ms as it flies the bat emits an ultrasonic sound wave with frequency295khz
now a second resistor r2 of 32x105 is connected in parallel to the existing resistor in the circuit and a second
suppose your waffle iron is rated at 085 kw when connected to a 210 102 v sourcewhat current does the waffle iron
an electric heater carries a current of 125 a when operating at a voltage of 360 102 v what is the resistance of the
a guitar string is74cm long and has a mass of 36 g the distance from the bridge to the support post isl 60 cm and the
a thin rod length 126 m is oriented vertically with its bottom end attached to the floor by means of a frictionless
a person bounces up and down on a trampoline while always staying in contact with it the motion is simple harmonic
a car passes a stationary cop at 35 ms at that instant he presses his brakes slowing at a rate of 15 ms2 the cop takes
a point-like mass m05 kg is attached to the rim of a uniform disk of moment of inertia i005kg m2 and radius a025m the
in the figure below an electron is shot directly toward the center of a large metal plate that has surface charge
the electric field just above the surface of the charged drum of a photocopying machine has a magnitude e of 27 x 105
an isolated conductor of arbitrary shape has a net charge of 86 x 10- 6 c inside the conductor is a cavity within which
a uniformly charged conducting sphere of 15 m diameter has a surface charge density of 11 microcm2a find the net charge
a diffraction grating 15 mm wide produces the 5th order at 45 degrees with light of wavelength 650 nm on a screen 80 mm
the pressure of sulfur dioxide so2 is 254 x 104 pa there are 402 moles of this gas in a volume of 516 m3 find the
capacitors are used in many applications where one needs to supply a short burst of relatively large current a
an electron with a speed of 574 times 108 cms in the positive direction of an x axis enters an electric field of
two sheets of polarizing material are placed with their transmission axes at right angles to each other a third
the solar panels on the roof of a house measure 40 m by 52 m assume they convert 12 of the incident em waves energy to
the intensity of the sunlight that reaches earths upper atmosphere is approximately 1410 wm2a what is the average
a system performs 352 j of work on its surroundings while losing 133 j of internal energy determine the heat
a cockroach of mass m lies on the rim of a uniform disk of mass 6 m that can rotate freely about its center like a