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1.What effect might each of the following have on the Earth's climate?
(a) CO2
(b) Particulate pollution
(c) Aircraft in the stratosphere
2. What concern has been raised about air pollution in the stratosphere?
What is the wavelength of an 102.1 FM radio station and What is the wavelength of an 1310 AM radio station
A point charge q = +39.0 μC moves from A to B separated by a distance d = 0.183 m in the presence of an external electric field E with arrow of magnitude 255 N/C directed toward the right as in the following figure. Find the electric force exerted..
a ray of light traveling through the air has an angle of incidence of 30 degrees on a block of glass, find speed of light on the block of glass
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
Calculate the absolute pressure at an ocean depth of 750 m. Assume the density of sea water is 1020 kg/m3 and that the air above exerts a pressure of 101.3 kPa.
A ball player hits a home run, and the baseball clears a wall 8.00 m high located 140.1 m from home plate. The ball is hit at an angle of 35.2 to the horizontal, and air resistance is negligible. Suppose the ball is hit at a height of 1.3 m above the..
a 10.5-kg uniform board is wedged into a corner and held by a string at a 50 degree angle. calculate the tension in the
A 1600 kg car moves down a level highway under the actions of two forces. find the speed of the car after it has moved a distance of 30 m, assuming it starts from rest
after being rubbed an object has acquired a charge of -1 nanocoulomb. choose the statement that is true only 1a. 6.25 x
Light of wavelength 655 nm is used to illuminate normally two glass plates 20 cm in length that touch at one end, How many bright fringes appear along the total length of the plates
A ball of mass m and another ball of mass 3m are placed inside a smooth metal tube with a massless spring compressed between them. With what speed does the lighter ball emerge from the other end
If you moved too far away from the wall the circle of light probably became very difficult to see. Is the intensity of the light circle ever zero
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