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a 1500 ft2 wall has an r-value of 110 hrofft2btu including the effects of the interior and exterior air layers how many
temperatures are often measured with electrical resistance thermometers suppose that the resistance of such a
at a construction site workers need to know height of some scaffolding assuming acceleration due to gravity is 98 ms2
an experiment youre designing needs a gas with 142 you recall from your physics class that no individual gas has this
at some distance from a point charge the electric potential is 6180 v and the magni- tude of the electric field is 1600
two loudspeakers placed 60 m apart are driven in phase by an audio oscillator whose frequency range is 1350 hz to 1826
assuming no water resistance a big fish is gliding through the water with momentum 20kg ms it swallowed a small fish of
the last stage of a rocket is traveling at a speed of 7200 ms this last stage is made up of two parts which are clamped
a 12 g bullet is stopped in a block of wood mw 56 kg the speed of the bulletplus-wood combination immediately after
two point charges 318 microc and -665 microc are separated by 113 m what is the electric potential midway between
ilya and anya each can run at a speed of 870 rmmph and walk at a speed of 360 rmmph they set off together on a route of
one end of a brass bar is maintained at 300degc while the other end is kept at a constant but lower temperature the
a ball swings in a vertical circle at the end of a rope 150 m long when the ball is 369deg past the lowest point on its
two point charges 0660 m apart experience a repulsive force of 0376 n the sum of the two charges equals 10910-5 c find
a small piece of dust of mass m 13 mu or micro g travels horizontally through an electric air cleaner in which the
the rms speed of 10 mol of argon atoms atomic weight 40 gmol in a box is 680 ms treat the gas as ideala what is the
in order to decrease the fundamental frequency of a guitar string by 40 by what percentage should you reduce the
a 3102 kg piano is being lifted at a steady speed from ground level straight up to an apartment 10m above the ground
a 570 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 120 m if her
the depth of the ocean is sometimes measured in fathoms 1 fathom 6 feet distance on the surface of the ocean is
the largest diamond ever found had a size of 3106 carats one carat is equivalent to a mass of 0200 g use the fact that
you are part of a search-and-rescue mission that has been called out to look for a lost explorer youve found the
1 because earths rotation is gradually slowing the length of each day increases the day at the end of 10 century is 10
on a friction less horizontal air table puck a w mass 0250 kg is moving towards puck b w mass 0350 kg that is initially
an electron is released from rest at the negative plate of a parallel plate capacitor the charge per unit area on each