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A cloud mass moving across the ocean at an altitude of 2000 m encounters a coastal mountain range. As it rises to a height of 3500 m to pass over the mountains, it undergoes an adiabatic expansion. The pressure at 2000 and 3500 m is 0.802 and 0.602 atm, respectively. If the initial temperature of the cloud mass is 288 K, what is the cloud temperature as it passes over the mountains? Assume that CP for air is 28.86J?K?1 ?mol?1 and the air obeys the ideal gas law. If you are on the mountain, should you expect rain or snow?
An electron moving along x axis with a constant speed of v = 5x10^6 m/s i enters the region of a uniform electric field, What is the verticle displacement y of the electron 4 ns later
The driver of a 1550 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m. Find the net work done on the car
What is speed of the command module
Threshold freq. of metal isf0. When the light of freq. 2f0 is incident on the metal max velocity of electrons is v1 and v2
A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..
A 120 kg barrel which is initially at rest is rolled down an inclined plane. The friction between the barrel and the surface of the plane is negligible, calculate the barrel's velocity when it reaches the ground level
A person lifts a 5kg cement block a vertical distance of 2.3m and after that aeries the block horizontally a distance of 6m. Determine the work completed by the person and by the force of gravity in this process.
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a section of a sphere. When he looks into one side of the hubcap, How far is his face from the hubcap
A point charge q1=+2.40?C is held stationary at the origin. A second point charge q2=-4.30? C moves from the point x= 0.150 m , y= 0m
A 2.20 kg frictionless block is attached to an ideal spring with forces constant 314N/m. At first the block has velocity -3.60 m/s and displacement 0.300-m.
A plane electromagnetic wave propagates in a vacuum in the z-direction. What is the mathematical expression for the magnetic field
The amount of 14C in an old, isolated sample of vegetation is 0.666 that expected from a present day sample with an equivalent carbon content
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