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Question1
A mountain climber, in procedure of crossing between two cliffs by a rope, pauses to rest. She weighs 521 N. As drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in left and right sides of the rope are not the same. Discover the tensions in the rope to left and to right of the mountain climber. (α = 58.5° and β = 81.5°.)
Question2
A coke-oven gas contains 40% CH4 , 13% H2 and 52% CO. Find out:
a) volume of dry air required to completely burn 1 m3 (both at the standard temperature and pressure, or STP, of 273°K and 1 atm) of this gas.
b) Volume (in m3 at STP) and composition (in percent by volume) of burning product gas, assuming all H2O is in the gas phase.
c) Recalculate a) and b) assuming feed air saturated with water vapour at 75°C.
An insulating sphere has a total excess charge Q distributed uniformly throughout the shere. Use Gauss's Law to calculate the electric field inside the sphere at a distance r
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3, What is the winding density n of the solenoid
An electric current I=5.0 amp flows down the y-axis and to the right on the x-axis. What is the magnitude and direction of the magnetic field at a point in the x-y plane with coordinates (a,a) where a=20 cm
If you had a single polarizer, how might you determine whether or not light from a room light was polarized when emitted from the bulb.
A 2 MeV deuteron strikes a 6Li3 nucleus. The compound nucleus splits into identical nuclides. calculate the COM kinetic energy of each
A luge and its rider, with a total mass of 90 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 38 m/s. If a force slows them to a stop at a constant rate of 1.4 m/s2.
The spring is then released. If the mass is attached to the spring, explain how far up the slope will the mass move before coming to rest? Express your answer using two significant figures.
determine the angle below the horizontal that you must aim your spear gun in order to catch dinner. Suppose the spear gun barrel is 1.70 m above the water surface, the fish is 1.40m below surface, and the spear travels in a straight line all the w..
A 4 kg dog stands on one end of a 20 kg boat. The dog is initially 6 m from the shore, How far has the boat moved after the dog has walked the 2m
A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA. If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface i..
A machine part rotates at an angular speed of 0.56 rad/s; its speed is then increased to 3.46 rad/s using an angular acceleration of 0.44 rad/s2, Find the angle through which the part rotates
A light ray is incident from air onto the surface of a very quiet lake. what is the index of refraction of the water
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