Physics, 13.07.2019 14:30 carlosleblanc26
1. moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? (1 point) isotope number atomic number atomic mass unit mass number 2. the atomic mass of an element is (1 point) the sum of the protons and neutrons in one atom of the element. twice the number of protons in one atom of the element. a ratio based on the mass of a carbon-12 atom. a weighted average of the masses of an element’s isotopes. 3. which general statement does not apply to metals? (1 point) most metals are ductile. most metals are malleable. most metals are brittle. most metals are good conductors of electric current. 4. group 7a of the periodic table contains the (1 point) most reactive nonmetals. most reactive metals. least reactive nonmetals. least reactive metals. 5. the unit for atomic mass is (1 point) gram. amu. pound. none of the above
Answers: 2
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Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)
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Current from a charged capacitor lights a bulb. as time goes on the brightness of the
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Physics, 22.06.2019 20:30, cupcake3103670
Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.
Answers: 1
1. moving from left to right across a row of the periodic table, which of the following values incre...
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