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an unknown substance has a mass of 0125 kg and an initial temperature of 994degc the substance is then dropped into a
an aluminium cup contains 225 g of water and a 40 g copper stirrer all at 27degc a 400 g sample of silver at an initial
a dolphin in 25 degrees c sea water emits a sound directed toward the bottom of the ocean 213 m below how much time
a skier travels down the trail the slope is inclined at an angle of 22 degree and the coefficient of kinetic friction
a harmonic wave is traveling along a rope the oscillator that generates the wave completes 410 vibrations in 251 s a
a student drops two metallic objects into a 120 g steel container holding 150 g of water at 25degc one object is a200 g
a 450 kg penguin runs onto a huge horizontal sheet of frictionless ice the sheet lies on the xy-plane at t 0 s it is
the coefficient of friction between the 300 kg block and the surface is 0400 the system starts from rest find the
an opaque container is 15 cm deepnbspit contains only a single coinnbspwhen looking into the container at a viewing
a man pushes horizontally with a force of 280 newton on a 60 kilogram crate to move it across a level floor the
a 1450-kg submarine rises straight up toward the surface sea water exerts both an upward buoyant force of 16140 n on
determine the energies and speeds of electrons in circular bohr orbits in a hydrogen-like atom using the relativistic
in reaching her destination a backpacker walks by an average velocity of 128 ms due west this average velocity results
a pendulum bob of mass 05 kilogram swings on the end of a 080 meter string making an angle of 25 degree with the
starting from rest a 5 kilogram crate slides 08 meter down a frictionless ramp making an angle of 25 degree to the
determine how much energy is transported across a 135 cm2 area per hour by an em wave whose e field has an rms strength
the inductance of a tightly wound coil is such that an emf of 300 mv is induced when the current changes at a rate of
some studies indicate that the upper frequency limit of hearing is decided by the diameter of the eardrum the
a how many independent linear combinations are possible nbspfor four 1s orbitals b draw pictures of the linear
a 56 kg woman cheats on her diet and eats a 590 calorie 540 kcal jelly donut for breakfasta how many joules of energy
a 100 kg football linebacker is moving at 2 ms tackles head-on an 80 kg halfback running 3 ms suppose the two players
a certain airplane has a speed of 290 knhr and is diving at an angle of 36 degrees below the horizontal when the pilot
a soccer ball is kicked from the ground by an initial speed of 195 ms at an upward angle of 45 degrees a player 55m
a missile is aimed to hit a target 650 km away if the missile is fired at an angle of 20o by the horizontal what must
an ion beam passes during crossed electric and magnetic fields without deflection the electric field is 2340 nc and the