Answers: 1
Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 23.06.2019 00:30
Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?
Answers: 2
Physics, 23.06.2019 20:30
The volumes of a sample of lead and a sample of platinum are the same: 2 cm3. the density of lead is 11.3 g/cm3 and the density of platinum is 21.5 g/cm3. which is an accurate description of their relative masses? a. the masses of the lead and platinum samples are the same. b. the mass of the lead sample is greater than the mass of the platinum sample. c. the mass of the platinum sample is greater than the mass of the lead sample.
Answers: 1
Physics, 23.06.2019 23:00
What is the angular momentum of a hydrogen atom in a 4p state? give your answer as a multiple of ħ.
Answers: 3
The polar ice caps of mars is believed to consist mostly of...
Mathematics, 06.11.2020 20:10
History, 06.11.2020 20:10
Mathematics, 06.11.2020 20:10
Chemistry, 06.11.2020 20:10
Geography, 06.11.2020 20:10
Mathematics, 06.11.2020 20:10
English, 06.11.2020 20:10