Models of the first star-forming clouds indicate that they had a temperature of roughly 180 k and a particle density of roughly 3.50×105 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.

part b: how does that mass compare with the sun's mass?

part c:

what is the estimated lifetime of a star with that mass?

choose the answer that best fits your estimate

greater than 10 million years
less than 10 million years
about 10 billion years
about 1000 years

in physics zero. in muscle fatigue could be high

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27