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Q1. Suppose an ideal gas is in a container 3L in volume and allowed to expand by having a piston move. The final volume after the piston moves is 15L. If the gas is at first at a pressure of 1×10^5 Pa and a temperature of 300 K, and temperature is maintained, what will be the new pressure?
Q2. A sledge loaded with bricks has a total mass of 18.20 kg and is pulled at constant speed by a rope inclined at 20.8degrees above the horizontal. The sledge moves a distance of 20.4 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope? N (b) How much work is completed by rope on the sledge? kJ (c) What is the mechanical energy lost due to friction?
A stone is thrown vertically upward with a speed of 12.3 m/s from the edge of a cliff 84.6m high. What is the speed just before hitting.
Assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 78.5 lb/in2 and the area of contact between each tire and the road is 7.13 cm2, what is your we..
What travel time is required for the landing
A plane is headed east with an air speed of 205.0 m/s. The wind blows southeast at 32.0 m/s. Determine the velocity of the plane relative to the earth.
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
Compute the momentum of the bullet
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
Electron microscopy has proved invaluable for investigations of viruses, cell membranes and subcellular structures, bacterial surfaces, visual receptors, chloroplasts, and the contractile properties of muscles. The "lenses" of an electron microsco..
A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
A thin, flexible metal plate attached at one end to the platform, can be used to measure mass. When the free end of the plate is pulled down and released, it vibrates in simple harmonic motion with a period that depends on the mass attached to the pl..
Suppose that a structure of arbitrary complexity has a number of forces applied to it (at various points) and yet is in static equilibrium. The principle of virtual work allows one to write an equation that relates the applied forces.
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