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a solar water heater for domestic hot-water supply uses solar collecting panels with a collection efficiency of 470 in
the range of human hearing extends from approximately 20 hz to 20000 hz find the wavelengths of these extremes at a
a commuter train blows its horn as it passes a passenger platform at a constant speed of 300 ms the train horn sounds
a steel wire with mass 29 g and length 123 m is strung on a bass so that the distance from the nut to the bridge is 110
two moles of a monatomic gas with an rms speed of 294 ms are contained in a tank that has a volume of 012 m3 if each
some hydrogen gas is enclosed within a chamber being held at 200 c with a volume of 0025 rm m3 the chamber is fitted
an ice-making machine inside a refrigerator operates in a carnot cycle it takes heat from liquid water at 00 c and
nitrogen gas is introduced into a large deflated plastic bag no gas is allowed to escape but as more and more nitrogen
in a high speed elevator passengers accelerate straight upward from rest to 15 kmhr in 525 seconds what is the average
a glass flask whose volume is 1000cm3 at a temperature of 0400 c is completely filled with mercury at the same
the unit of horsepower was defined by considering the power output of a typical horse working-horse guidelines in the
a childs sled has rails that slide with little friction across the snow logan has an old wooden sled with heavy iron
a box is pushed across the floor against a constant frictional force the box is pushed across the room to the east in
a nonuniform horizontal bar of mass 343 is supported by two massless wires against gravity the left wire makes an angle
part a calculate the magnitude of the angular momentum of the mars in a circular orbit around the sun the mars has mass
calculate the magnitude of the angular momentum of the mars in a circular orbit around the sun the mars has mass
a 140 kg block is attached to a spring with spring constant 13 nm while the block is sitting at rest a student hits it
how does the maximum kinetic energy of the emitted photoelectrons depend on the frequency of light b does the maximum
after landing on an unfamiliar planet a space explorer constructs a simple pendulum of length 530 cm the explorer
a vertical scale on a spring balance reads from 0 to 150 n the scale has a length of 110 cm from the 0 to 150 n reading
a 200 g mass attached to a horizontal spring oscillates at a frequency of 20 hz at one instant the mass is at x 5 cm
a spring is hanging from the ceiling attaching a 480 g mass to the spring causes it to stretch 210 cm in order to come
an oscillator with a mass of 500 g and a period of 050s has an amplitude that decreases by 10 each complete oscillation
a cat drops from a shelf 37ft above the floor and lands on all four feet his legs bring him to a stop in a distance of