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if a heater supplies 18times106 jh to a room50 m times 52mtimes30 m containing air at 20degc and 10 atm by how much
an air puck of mass 029 kg is tied to a string and allowed to revolve in a circle of radius 14 m on a frictionless
a 610-omega resistor is connected in parallel with a 1180-omegaresistor this parallel group is linked in series with
the tension in a string by a linear mass density of 000100 kgm is 0490 n what is the frequency of a sinusoidal wave on
the lowest string on a certain acoustic guitar is 0582m in length under a tension of 653n the string has a resonant
the human eye can detect light by an intensity as low as about10ndash9 wm2 a typical large galaxy such as our own milky
a certain microwave oven produces microwaves of frequency 2450 mhz with a power of 500 w how long must it take to heat
an electric field of 9104 vm exists among the plates of a circular parallel-plate capacitor that has a plate separation
a 45 microf capacitor is charged to a potential dissimilarity of 110 v the wires connecting the capacitor to the
the temperature of a monatomic ideal gas remains constant through a process in which 4410 j of heat flows out of the
two loudspeakers on a concert stage are vibrating in phase a listener is 575 m from the left speaker and 285 m from the
a tube is open only at one end a certain harmonic produced with the tube has a frequency of 485 hz the next higher
an unstable high-energy particle is created in the laboratory and it moves at a speed of 0950crelative to a stationary
a resistor and an inductor are connected in series when connected to a 60 hz 90 v rms source the voltage drop across
a white light is usually incident on two glass microscope slides with a thin layer of air of variable thickness among
a at what distance from a single slit of width 0155 mm should a screen be placed so that the width of the fraunhofer
a how far is the second dark fringe to the right of the central bright fringe in the double-slit interference pattern
a circuit is pulled with a 16-n force toward the right to maintain a constant speed v the loop is partially in and
a 2000 kg flat-bottomed boat floats in fresh water which has a density of 10000 kgm3 assuming that the base of the boat
a proposed star wars antimissile laser is to focus 23 microm wavelength infrared light to a 50 cm diameter spot on a
the rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides thus a
two particles execute simple harmonic motion of the similar amplitude and frequency along close parallel lines they
the suspension system of a 2100 kg automobile sags 12 cm when the chassis is placed on it also the oscillation
a discover the resolving power of a grating needed to separate the sodium-d spectral lines which are at 5889 nm and
a tube of glowing gas emits light at 500 nm and 400 nm in a double-slit apparatus what is the lowest order 500 nm