The density of dry air at 20°C is 1.20 g/L What is the mass of dry air, in kilograms, in a room that is 20.0 m by 12.0 m by 5.0m?
A)
1.00 X 103 kg
B)
1.016 X 105 kg
C)
1.22 X 103 kg
D)
1.44 X 103 kg

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

Which is the most accurate name for the covalent compound p2o3?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?