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a 45 kg woman cheats on her diet and eats a 439 calorie 439 kcal jelly donut for breakfasta how many joules of energy
a styrofoam box has a surface area of 079 m2 and a wall thickness of 20 cm the temperature of the inner surface is
a 240 kg gold bar at 270degc is placed in a large insulated 0800 kg glass container at 150degc with 200 kg of water at
a 189g block is launched by compressing a spring of constant k 200 nm a distance of 15cm the spring is mounted
suppose 0380 kg of water initially at 450degc is poured into a 0300 kg glass beaker having a temperature of 250degc a
say the electrical company needs to step down the voltage from 7200v rms in the power line behind your house to the
calculate the inductance si units henries of a coil of wire having a loop diameter of 05 cm and length of 1 cm the wire
in a youngs double-slit experiment two rays of monochromatic light emerge from the slits and meet at a point on a
light of wavelength 669 nm is incident on a double slit the angle between the central bright fringe and the second dark
a space freighter has a total mass of 100106 kg the captain wants to travel to a destination 100 light years away in 12
a pion decays into a muon and a neeutrino in the rest frame of the pion the muon always has a speed of 507c if a beam
in a double-slit experiment the slit separation d is 130 times the slit width w how many bright interference fringes
a 28kg rock approaches the foot of a hill with a speed of 15 ms this hill slopes upward at a constant angle of 40
the spaceship enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be
suppose that the speed of light in a vacuum were one million times smaller than its actual value c 300 x 102 ms the
a jetliner has a mass of 11 x 105 kg and flies at a speed of 120 msa find the value of its momentumb if the speed of
suppose youre building a scale model of the hydrogen atom and the nucleus is represented by a ball of radius 32 cm
a wooden shelter has walls constructed of wooden planks 100 cm thick if the exterior temperature is -200degc and the
given heat 1000 j is input to a carnot engine at 300 degrees celsius and waste heat rejected at 10 degrees c find the
nbspa 1100 kg car is moving at a speed of 400 msa what is kinetic energy of the carb how much work is required to bring
a solution has a hydronium-ion concentration of 10 x 10-5 mol per liter what is the ph of this solution is this
a 0800-kg block oscillates on the end of a spring whose spring constant is k 420 nm the mass moves in a fluid which
1 a 500 ml water sample required 514 ml of 00100 m na2h2y to reach the endpoint for the titration procedure described
1 the cross section of a hill can be approximated by the curve of y 03x - 000003x 3from x 0 to x 100 m the top of
a simple pendulum is 050m long at t0 it is released from rest starting at an angle of 10 degreesignoring friction what