Explanation:
McLeod gauge:
It is used to measure very low pressure of gas.It measure gas pressure by the help of mercury(Hg).it measure absolute pressure of gas.
McLeod gauge on the principle of Boyle's law.Boyle's law state that ,at constant temperature the pressure of gas is directly proportional to its volume.From Boyle's law

A sample of gas is taken from vacuum then its pressure is measured by help Hg.
Answer:
Marco is an Italian architect. He has received a contract to design a spacious building.
Explanation:
ect.
Answer:
a. Technician A
Explanation:
Aftermarket parts are replacement parts that are not made by the original equipment manufacturer. They can not guarantee as much functionaluty when compared to OEMs. Original Equipment Manufacturer (OEM) usually their own proprietary scan tools which offer better and functionality to service their special line of vehicles. So Technician A alone is correct.
Answer:
r=0.228m
Explanation:
The equation that defines the states of a gas according to its thermodynamic properties is given by the general equation of ideal gases
PV=nRT
where
P=pressure =5bar=500.000Pa
V=volume
n=moles=10
R = universal constant for ideal gases = 8.31J / (K.mol)
T=temperature=80F=299.8K
solvig For V
V=(nRT)/P

we know that the volume of a sphere is

solving for r
![r=\sqrt[3]{ \frac{3 V}{4\pi } }](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B%20%5Cfrac%7B3%20V%7D%7B4%5Cpi%20%7D%20%7D)
solving
![r=\sqrt[3]{ \frac{3 (0.049)}{4\pi } }\\r=0.228m](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B%20%5Cfrac%7B3%20%280.049%29%7D%7B4%5Cpi%20%7D%20%7D%5C%5Cr%3D0.228m)