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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
a 1280 n uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end a w 1820
equal charges are located at the vertices of a 3-4-5 triangle the charge experiencing the largest force is located at
three moles of a monoatomic ideal gas are placed in a portable container with a volume of 00035 m3 the temperature of
a cubical box with sides of length 0305 m contains 1760 moles of neon gas at a temperature of 285 k what is the average
two slits are illuminated with green light 540nm the slits are 005mm and the distance to the screen is 15m at what
suppose a 50 meter diameter telescope were constructed on the dark side of the moon the viewing there except for brief
a gas fills the right portion of a horizontal cylinder whose radius is 557 cm the initial pressure of the gas is 291 x