Physics, 17.08.2019 16:10, myloredo10
Matter is made out of atoms - assuming the conditions are not very extreme. in neutral atoms negative electrons orbit around the positive nucleus. the nucleus is composed of positive protons and neutral neutrons. in the most common isotope of hydrogen a single electron orbits a single proton. what is the magnitude of the electric charge represented by the the electrons in 1.57 kg of distilled water? (a 2 liter pop bottle can hold 2 kg of water.) hints: one mole of water contains 6.0221×1023 water molecules. one water molecule has ten electrons: eight from the oxygen atom and two from the two hydrogen atoms. the electric charge of an electron is 1.6022×10-19 c. this is called elementary charge. the molar mass of water is mwater = 18 g/mol, which means that the mass of one mole of water is 18 grams.
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Physics, 22.06.2019 14:20, yourgirlmaya
The energy released by a nuclear fusion reaction is produced when
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Physics, 22.06.2019 16:30, JJlover1892
What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
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Physics, 22.06.2019 20:20, NNopeNNopeNNope
The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
Matter is made out of atoms - assuming the conditions are not very extreme. in neutral atoms negativ...
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