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a carnot heat engine has water ice as a cold reservoir and has an efficiency of 70 the cold reservoir then warms to
suppose you have a converging lens and place an object at do f21 find the image distance di using the thin-lens
an iron tower in is 363 meters tall on a cold day t -88 degrees celsius what is its height of the tower on a hot day
a student hangs three masses from a force table if the first mass of 250 g is at an angle of 130deg and she then hangs
1 if we could somehow pull one equivalent one faraday of positive charge in a small ball 10 cm away from one equivalent
web pages with pictures are good here - just remember tonbspadd lots of your wordsnbspto describe what you learned
a particle carrying charge q is located on the x axis at xd a particle carrying charge -3q is located on the x axis at
an aircraft weighing 983nbspn is acceleratednbspat 12nbspmss fornbsp13 seconds at which time the aircraft
jeff gordon and dale earnhardt are racing their stock cars to try to win the daytona 500 jeff makes a pit stop to gas
star a has a radius of 200 000 km and a surface temperature of 6 000 k star b has a radius of 400 000 km and a surface
the volume of a cube is found by multiplying length times width times height if an object has a volume of 16 m3 what is
a 012 kg bullet traveling at 1129 mph hits a 6 kg block of wood and stays in the wood what is the velocity speed of the
youre in an airplane that flies horizontally with speed 900 kmh 250 ms when an engine falls off neglecting air
a if it has enough kinetic energy a molecule at the surface of the earth can escape the earths gravitation in the sense
a estimate the terminal speed of a wooden sphere density 0790 gcm3 falling through air if its radius is 800 cm and its
a 2 kg car moving towards the left at 4 ms collides head on with an 8 kg car moving towards the right at 2 ms and they
an aircraft with a weight of 9724 n accelerates from 0 to 82 ms in 94 seconds at which time the aircraft launches what
an aircraft starts at rest and is accelerated at 145 ms2for 13 seconds at which time the aircraft launches what is the
galileos discoveriesthe questions in this problem are about galileos life within the larger historical context leading
a particle attached to a string revolves in a vertical circle of radius r at the top of the circle its speed is 97 ms
a small spherical bead of massnbsp360nbspg is released from rest atnbsptnbsp 0 from a point under the surface of a
why does the presence of large bodies of water tend to moderate the climate of nearby land-making it warmer in cold
in a room are a wooden table cloth covered chairs a metal filing cabinet and glass bottles which of these has a