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A rock weighing 400 N sits on the edge of a 60 m cliff. How much potential energy does it have? Please explain.
mass if it is placed at the following locations. Consult the figure 12.9 in the textbook, and assume a constant density through each of the interior regions, estimate the average density for each region
how much energy is lost through a window with a 1x2m^2 larg, 3 mm thick glass sheet, if temperature difference between outside
What mass (in grams) of steam at 100°C must be mixed with 403 g of ice at its melting point, in a thermally insulated container, to create liquid water at 87°C? The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg, and..
Find the electric energy density between the plates of a 225-?F parallel-plate capacitor. The potential difference between the plates is 350V
An electron is in the fifth Bohr orbit of hydrogen. Find the speed of the electron. Find the current corresponding to the motion of the electron
A string is wrapped several times around the rim of a small hoop with radius 8.00 cm and mass 0.180 kg. calculate the angular speed of the rotating hoop
Two objects of mass m and 9m undergo a completely inelastic collision in one dimension. what was the ratio of their speeds before the collision
q1. a fan at a rock concert is 30 m from the stage where the sound intensity level is 110 db. her eardrums have a
Calculate the energy content of 1 kg of natural uranium assuming complete fission. Estimate an average energy per fission. Compare this to the energy in 1 kg of coal (reference all values assumed).
A 57-kg water skier is being pulled by a nylon tow rope that is attached to a boat. The unstretched length of the rope is 11 m, What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
Two metal rods, silver and copper, are attached to a steam chamber with a temp 100 C, at one end and an ice bath ( 0 C ) at the other end. How much heat flows through the two rods in 60s
An ocean liner sailing at 43.40 m/s is caught in a current flowing 11.20 m/s at 24.7 degrees east of south what is the direction (angle) of the overall speed of ocean liner.
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