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Question1
14g of nitrogen gas at STP are adiabatically compressed to a pressure of 20ATM. What are?
(a) Final temperature
(b) Work done by the gas
(c) Heat input to the gas and
(d) The pressure ratio pmax/pmin
(e) Show the process on a pV diagram using proper scales on both axes
Question2
In a particular region of the earth's atmosphere, the electric field above the earth's surface has been measured to be 150 N/C downward at an altitude of 254 m and 165 N/C downward at an altitude of 399 m. Calculate the volume charge density of the atmosphere assuming it to be uniform between 254 and 399 m. Neglect the curvature of the earth.
The aurora is caused when electrons and protons, moving in the earth's magnetic field of ?5×10?5 T, collide with molecules of the atmosphere, find Radius of the electron and proton in m
A projectile is fired from the edge of a 10m high cliff at 10m/s and an angle of 30 degrees from the horizontal. what is the magnitude of the final velocity
Two projectiles are thrown with the same initial speed, one at an angle with respect to the level ground and the other at angle 90 degree. Both projectiles strike the ground at the equivalent distance from the projection point. Are both projectiles i..
Radio station KBOB broadcasts at a frequency of 85.7 MHz on your dial using a radio waves that travel at 3.00X10^8 m/s. What's the shortest distance between the towers
A car takes a sharp turn on a road. Which of the following provides the centripetal force on the car? The weight of the car, frictional force, tangential acceleration, or gravitational force?
A certain single ion channel is selectively permeable to K and has a resistance of 1.15 GOhms. How many K ions travel through the channel during this time
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 345 N/C. At a distance r2 from the charge, the field has a magnitude of 120 N/C
A child in a boat throws a 5.15-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest
Consider the 30N weight held by two cables shown below. The left-hand cable is horizontal. What is the tension in the cable slanted
A solid uniform sphere and a uniform spherical shell, both having the same mass and radius, How fast is each sphere moving when it reaches the bottom of the hill
What is mechanical energy
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
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