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According to highly accurate GPS-measurements , the continent of North America is drifting with a speed of 1cm/year. Assuming a continent is about 50 km thick, estimate the kinetic energy the continental US has.
A ball rolls horizontally with a speed of 8.1m/s off the edge of a tall platform.If the ball lands 6.1m from the point on the ground directly below the edge of the platform
Fluid is flowing through a pipe at a rate of 100 gal/min. The inlet pressure is 20 psig and the outlet pressure is 0 psig. At what rate [Btu/(hR)] is entropy generated
To fight a fire on the fourth floor of a building, firefighters want to use a hose of diameter 6.31cm to shoot 925 liters/minute of water to a height of 11m, What pressure must the water have inside the hose
In the rainy season, the amazon flows fast and runs deep. In one location, the river is 23m deep and moves at a speed of 4.0m/s toward the east. what is the potential (magnitude and sign) at the surface
A rock is thrown vertically up at 6.7 m/s. (a) What is it's height when its velocity is 1.35 m/s? (b) Has the rock made it to the highest point in the path?
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
A factory worker pushes a 34.0 kg crate a distance of 3.7 m along a level floor at constant velocity by pushing horizontally on it, How much work is done on the crate by the normal force
A 0.6 kg block of ice is sliding by you on a very slippery floor at 3.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0035 seconds.
A grating has 776 lines per centimeter. Find out the angles of the first three principal maxima above the central fringe when this grating is illuminated with 603 nm light.
Explain the spacing between allowed vibrational energy levels
What will the force be between these charges. What should the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction.
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