Calculate the centripetal force exerted on the earth by the sun. assume that the period of revolution for the earth is 365.25 days, the average distance is 1.5 × 10^8 km and the earth’s mass is 6 × 10^24 kg. the choices are: 1. 3.56775 × 10^22 n 2. 2.66331 × 10^32 n 3. 7.24562 × 10^22 n 4. 1.62932 × 10^21 n5. none of these 6. 3.56775 × 10^19 n 7. 4.6238 × 10^29 n 8. 1.28439 × 10^26 n 9. 7.24562 × 10^20 n
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Physics, 21.06.2019 18:00
Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?
Answers: 3
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
Physics, 22.06.2019 09:30
An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?
Answers: 2
Calculate the centripetal force exerted on the earth by the sun. assume that the period of revolutio...
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