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an electron traveling at 993 ms enters a 15 t magnetic field the angle between the velocity and the field is 90o find
two trains are traveling towards each other on parallel tracks that run diagonally northeast to southwest and vice
a young hockey player stands at rest on the ice holding a 13-kg helmet the player tosses the helmet with a speed of 46
what will be the equilibrium temperature when a 268 g block of copper at 319degc is placed in a 167 g aluminum
at the local grocery store you push a 147-kg shopping cart you stop for a moment to add a bag of dog food to your cart
a cube of ice is taken from the freezer at -85degc and placed in a 97 g aluminum calorimeter filled with 292 g of water
a hummingbird is flying in such a way that it is initially moving vertically with a speed of 44 ms and accelerating
optimus prime is flying straight up at 44 ms when he accidentally drops his mega-ray blaster and it falls 65 m to the
vector a has a magnitude of 33 and is pointing at an angle a73deg east of north vector b has a magnitude of 18 and is
a solid block is suspended from a spring scale the reading on the scale when the block is completely immersed in water
a standing wave of 625 hz is produced on a string that is 133 m long and fixed on both ends if the speed of waves on
a higgs boson particle can be created by colliding protons and anti-protons each with a mass of m if the higgs boson
calculate the gyrofrequency of an electron in earths magnetic field having a value of 35 a-m-1 determine the electron
a coil has resistance r8ohms and inductance l5millihenries and is powered by a generator with variable frequency and
three moles of an ideal gas undergo a reversible isothermal compression at 215degc during this compression 1870 j of
you make tea with 0375 kg of 946degc water and let it cool to room temperature 200degc before drinking ita calculate
a carnot heat engine has a thermal efficiency of 0615 and the temperature of its hot reservoir is 775 k if 2375 j of
a carnot engine whose high-temperature reservoir is at 580 k takes in 520 j of heat at this temperature in each cycle
a refrigerator has a coefficient of performance of 210 each cycle it absorbs 340 104 j of heat from the cold reservoira
a diesel engine performs 2090 j of mechanical work and discards 4125 j of heat each cyclea how much heat must be
write down the wave function for the ground state of an electron in a hydrogen atom in spherical coordinates what are n
a concave cosmetic mirror has a focal length of 24 cm a 50 cm -long mascara brush is held upright 12 cm from the
a large aquarium of height 598 m is filled with fresh water to a depth of d 240 m one wall of the aquarium consists of
a radio tuner is built by connecting an l041mh inductor and variable capacitor in series with an antenna the driving
a coil has resistance r14ohms and inductance l3millihenries and is powered by a generator with variable frequency and