1 atm is equivalent to 760 torr.
To express 0.905 atm in torr, all you have to do is cross multiplication as follows:
1 atm ................> 760 torr
0.905 atm .........> ?? torr
pressure = (0.905 * 760) / (1)
pressure = 687.8 torr
Answer:
Gauge pressure rise = 292 Pa
Explanation:
We are given;
Diameter of the water droplet is d = 2mm = 0.002m
Radius = 0.002/2 = 0.001
Surface tension; σ = 73 mNm = 73 x 10^(-3)m
So we have to find the pressure rise.
Now, pressure rise is given by the formula ;
ΔP = P_inside - P_atmosphere = 4σ/r
Where r is radius.
Thus, plugging in the relevant values, we have;
ΔP = (4 x 73 x 10^(-3))/0.001 = 292 pa
Speed = distance / time
speed = (121-88) / 30
speed = 1.1 meters? per minute
The biggest rock, because it has more mass. More mass means that gravity is stronger on it than the other rocks, thus pulling it towards the center of the Earth more quickly, when on a slope.