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A new record for running the stairs of the Empire State Building was set on 3 February 2003. The 86 flights, with a total of 1576 steps were run in 9 minutes and 33 seconds.
Part A. If the height gain of each step was 0.20 meter, and the mass of the runner was 71 kilogram, find what was his average power output during the climb? (W)
For N2 at 25oC and 1.00 atm calculate the number of collisions per second made by one molecule; the number of collisions per second per cubic centimeter; compare these values to N2 at 25oC and 1.0*10^-6 torr using the values already calculated Show a..
After the Sun exhausts its nuclear fuel, its ultimate fate will be to collapse to a white dwarf state. Calculate the average density of the white dwarf
what advantage might there be in using two identical capacitors in parallel connected in series with another parallelpair, rather than using a single capacitor.
The magnetic field due to a 2 Amp current flowing in a long, straight wire is 8 μT at a point P, a certain distance away from the wire. Find how far is this point from the center of the wire
The luxury linerQueen Elizabeth 2 has a diesel-electric powerplant with amaximum power of 87 MW at a cruisingspeed of 33.5 knots. What forward force is exerted on the ship at this speed
A tennis ball is struck such that it leaves the rackethorizontally with a speed of 28.0 m/s. What is the height of the tennis ball when it leaves the racket
A beaker of water sits in the sun until it reaches an equilibrium temperature of 30°C. Find how much ice remains after the system reaches equilibrium
A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.30 T is perpendicular to the loop. The field reverses its direction, and its magnitude changes to 0.20 T in 2.0 s. Find the magnitude of the average induced emf in th..
Consider the following two-step process. Heat is allowed toflow out of an ideal gas at constant volume so that its pressuredrops from P1 = 2.02 atm toP2 = 1.62 atm. Calculate the total heatflow into or out of the gas
suppose the motion in problem 3.7 is taking place in a viscous medium. in 16 seconds the amplitude reduces to half of
A diffraction grating is made up of slits of width 420 nm with separation 1300 nm. How many maxima are there in the full diffraction pattern
A person who weighs 653 N is riding a 100-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires
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