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Question: Imagine that the Earth\'s size shrunk by a factor of 8.10 so that now its radius is 786 km instead of 6370 km. However, Earth\'s mass has remained the same at 5.98 × 1024 kg. If your mass is 76.1 kg, then calculate your weight before and after Earth\'s shrinkage in Newtons and pounds.
The temperature of the surface of a certain star is 7500 K. Most hydrogen atoms at surface of the star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could ..
A 13 g bullet traveling 230 m/s penetrates a 2.0 kg block of wood and emerges going 170 m/s. how fast does it move after the bullet emerges
An artillery shell is fired from a cliff 20.4 m above a valley witha velocity 254 m/s at an angle 37.8 º above the horizontal. What is the maximum height of the shell
Two insulated wires, each 2.94 m long, are taped together to form a two-wire unit that is 2.94 m long. One wire carries a current of 8.36 A, What is the current I
College freshmen. A survey of college freshmen in 2001 asked what field they planned to study. The results: 12.6%, arts and humanities; 16.6%, business; 10.1%, education; 18.6%, engineering and science; 12.0%, professional; and 10.3%, social scien..
A circular coil enclosing an area of 96 cm2 is made of 199 turns of copper wire. The wire making up the coil has resistance of 3.0 , and the ends of the wire are linked to form a closed circuit.
Find out all intermediate results to at least four-digit accuracy to minimize roundoff error. m/s2 direction 3° from the direction of velocity towards center of the circle
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.60 10-4 m2, find the cross-sectional area of the water stream at a point 0.09 m below the faucet
two astronauts are 1.5 m apart in their spaceship. one speaks to the other. the conversation is transmitted to earth
An air parcel moves northwards and becomes entrained in a strong westerly flow, circling the entire globe in the space of a few weeks. State the name given to this high-level flow and define briefly how its structure is related to lateral and vert..
an object travels in a circle of radius 2.0 m. at time t 0 the object has a velocity of 10 ms and it slows uniformly
Light of wavelength 563 nm incident on a pair of slits produces an interference pattern on a distant screen in which the separation between adjacent bright fringes at the center of the pattern is 0.589 cm
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