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The Greenland Ice Sheet covers an area of about 1. 7. 106 km2 with a mean thickness of about 1 .4 km. Assume that the annual production of new ice for the Greenland Ice Sheet is about 10 cm.
What is the renewal time (years) of the Greenland Ice Sheet?
In a tennis serve, a 0.070 kg ball can be accelerated from rest to 36 m/s over a distance of 0.75 m. Find the magnitude of the average force exerted by the racket on the ball
What is the propagation delay on a circuit using a LEO satellite orbiting 500 miles above the earth if the speed of the signal is 186,000 miles per second? If the satellite is 22,000 miles above the earth?
a 0.40-kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 3.0 n for a distance
A football is thrown on a long pass. Compared to the ball's initial vertical velocity, the vertical component of its velocity at the highest point is
The Navy operated a "man-rated" centrifuge in Warminster, PA. It was used for testing with the astronauts of the Mercury, What is the period of the gondola at that speed
A fish takes the bait and pulls on the line with a force of2.2N. The fishing reel, which rotates without friction, is acylinder of radius 0.055m and mass 0.99kg. Assume the reelhas a friction clutch that exerts a restraining torque of0.047N×m.
The Lockheed SR-71 Blackbird may be the fastest non- research airplane ever built; it traveled at 2200 miles/ hour (983 m/s) and was in operation from 1966 to 1990. Its length is 32.74 m. By what percentage would it appear to be length contracted ..
Light of wavelength 646 nm from a distant source is incident on a slit 0.760 mm wide, and the resulting diffraction pattern is observed on a screen 3.60 m away. What is the distance between the two dark fringes
The mass of an empty 6.34 -gallon container is 2.40 kg. The mass of the same container filled with unknown fluid is 17.0 kg. What is the density of the fluid
sound of a single frequency is sent into the system of pipes, one straight, the other consisting of two semi-circular paths of radii 20cm and 30cm. what is the lowest frequency that produces an intensity maximum on the output side
The now-discontinued Concorde flew at Mach 1.3, which meant the speed of the plane was 1.3 times the speed of sound in air. What is the angle among the direction of propagation of the shockwave and the direction of the plane's velocity?
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
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