Physics, 10.02.2020 22:31 drzewostan5716
Temperatura finală a unei bucăți de gheață, ce are inițial t1 = -10°C și masa m = 800 g, care primește căldura Q = 368,42 kJ este aproximativ: (Se cunosc ca = 4180 J/ kg·K, cg = 2090 J/ kg·K, λg = 335 kJ/kg).
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The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes
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Physics, 22.06.2019 13:00
4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?
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Physics, 22.06.2019 16:30
3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?
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Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
Temperatura finală a unei bucăți de gheață, ce are inițial t1 = -10°C și masa m = 800 g, care primeș...
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