Models of the first star-forming clouds indicate that they had a temperature of roughly 180 K and a particle density of roughly 3.00×105 particles per cubic centimeter at the time they started trapping their internal thermal energy. Part A Estimate the mass at which thermal pressure balances gravity for these values of pressure and temperature. Mcloud = nothing kg Request Answer Part B How does that mass compare with the Sun's mass? Mcloud = nothing ⋅MSun Request Answer Part C What is the estimated lifetime of a star with that mass? Choose the answer that best fits your estimate Choose the answer that best fits your estimate About 10 billion years Greater than 10 million years Less than 10 million years About 1000 years
Answers: 1
Physics, 22.06.2019 10:00
Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?
Answers: 1
Physics, 22.06.2019 15:30
The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.
Answers: 1
Physics, 22.06.2019 17:00
(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.
Answers: 3
Physics, 23.06.2019 02:40
Check the following equation for dimensional homogeneity: ⅆ mv=∫t1t2(fcosθ)ⅆt where m is mass, v is velocity, f is force, θ is an angle, and t is time. check that each term in the equation has the following dimensions: [malbec] where you are to choose the coefficients a, b, c.
Answers: 2
Models of the first star-forming clouds indicate that they had a temperature of roughly 180 K and a...
History, 03.04.2020 02:01
English, 03.04.2020 02:01
Biology, 03.04.2020 02:01
History, 03.04.2020 02:02
Mathematics, 03.04.2020 02:02
History, 03.04.2020 02:02
Mathematics, 03.04.2020 02:02
Biology, 03.04.2020 02:02
Computers and Technology, 03.04.2020 02:02