Answer:
Explanation:
The pressure of the gas can be found out as follows
Gas law formula is as follows
PV = nRT
P = nRT / V
= 32.4 X 8.31 X ( 273 + 459.38 ) / 51 X 10⁻⁶
3866.45 X 10⁶ Pa.
The first change is isobaric therefore
V₁ / T₁ = V₂ / T₂
V₂ = V₁ X T₂/ T₁
= 51 X 10⁻⁶ X ( 855.6 +273) / (459.38 +273)
= 78 X 10⁻⁶
78 cm³
After the first operation , the pressure of the gas remains at
= 3866.45 X 10⁶ Pa.
Now volume of the gas changes from 78 cm³ to 25.3 cm³ isothermally so
P₁V₁ = P₂V₂
P₂ = P₁V₁ / V₂
= 3866.45 X 10⁶ X 78 / 25.3
= 11920 X 10⁶ . Pa
Answer:
30 celsius
Explanation:
30 celsius = 86 fahrenheit
Answer:3m/s
Explanation:
mass(m)=50kg
Kinetic energy =225 joules
Kinetic energy=(m x (velocity)^2)/2
225=(50 x (velocity)^2)/2
Cross multiplying we get
225x2=50x(velocity)^2
450=50x(velocity)^2
Divide both sides by 50
450/50=(50x(velocity)^2)/50
9=(velocity)^2
Taking the square root of both sides we get
√9=velocity
3=velocity
Velocity=3m/s
Answer:
Volcanic ash helps scientists to determine the age of a rock sequence by using the process of RADIOMETRIC DATING
Explanation:
When scientist want to determine the age of a rock sequence, they try to find it they is a volcanic ash present. This volcanic ash tend to contains radio isotopes or radioactive elements that can be used to determine the age of the rock sequence. This process is called a Radiometric dating.
Radiometric dating can be defined as the process of dating rocks or other materials based or the known rate of decay of radioactive isotopes.
Radiometric dating has to involve parent and daughter radioactive isotopes therefore the following must be observed before carrying out radiometric dating.
a. The half life of the Parent radioactive isotopes must be known
b. The daughter radioactive isotopes must be available in substantial amounts and it must be differentiated from the parent radioactive isotopes
c. The parent radioactive isotope must have a longer half-life present in the volcanic ash as at the time of radiometric dating.
Answer:
refraction
Explanation: hope this helps :)