Tuesday
December 10, 2013

# Posts by Annie

Total # Posts: 542

biology
what is the importance of islands in the study of evolution?

Stat
Please help with this problem, not sure calculate it. Consider the standard normal distribution and find P(-1.5 < Z < 2.35).

Physics
A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal. a) find the x and y components of the velocity b) find the time the ball is in the air c) find the horizontal distance the ball travels before hitting the ground d) fi...

Physics
a 254-kg crate is pushed horizontally with a force of 740 N. if the coefficient of friction is .20, calculate the acceleration of the crate

Geometry
it is not a right triangle. the easiest way i determine is if they are factors of 3,4 and 5

chemistry
The air exhaled by an average human being might have the following typical combustion, expressed in terms of partial pressures: N2 = 569torr; O2 = 116 torr; CO2 =28 torr; water vapor = 47 torr. what are the mole fractions of each?

Physics
A 50-kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4  106 m, mass = 6.0  1024 kg)

algebra
Does 6+5x=44

Chemistry
I have one more question, why is the volume of NaCl 0.05 L when we are calculating the mols and 0.1 L when we are calculating mass?

Chemistry
Thankyou so much for all the help and the explanation and your time.

Pages: <<Prev | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | Next>>

Search
Members