Answer:
139.97 kPa
Explanation:
Assuming propane is an ideal gas
PV = nRT
n₁ ( number of mole f the first gas) of the 1 m³ rigid tank = P₁V₁ / RT₁ R gas constant = 8.314 J/mol
n₁ = 100kPa × 1 m³ / (8.314 J/mol × 300 K) = 0.0401 mol
n₂ = 0.5 m³ × 250 kPa / ( 8.314J/mol × 400 K) = 0.0376 mol where n₂ is the number of mole of the second gas
n total = n₁ + n₂ = 0.0401 mol + 0.0376 mol = 0.0777 mol
PV = nRT
P final pressure = nRT / V where V = V₁ + V₂ = 1 m³ + 0.5 m³ = 1.5 m³
P final pressure = 0.0777 mol × 8.314 J/mol × 325 K / 1.5 m³ = 139.97 kPa
The choices are:
a. bringing it to a mechanic for a tune-up
b. checking to make sure it is in working order
c. making sure you are entering your vehicle
d. giving the tires a good kick to check traction
Answer:
The answer is: letter b, checking to make sure it is in working order.
Explanation:
A "vehicle check" is essential for everyone involved. It makes the driver and the passengers safe, and also extends that safety to the people in the environment. Before driving, you need to check your car for the following: <em>fluids, wipers, spare wheels, leaks and the like</em>. This will ensure that your vehicle is in proper working order and <u>will lessen the possibility of car accident in the future.</u>
Thus, this explains the answer, letter b.
Answer:
Speed=1.633 m/s
Force= 20 N
Explanation:
Ideally, 
hence 
where v is the speed of collar, m is the mass of collar, k is spring constant and s is the displacement.
In this case, s=100-0=100mm=0.1m since 1 m is equivalent to 1000mm
k is given as 200 N/m and mass is 0.75 Kg
Substituting the given values
Therefore, <u>the speed is 1.633 m/s</u>
The sum of vertical forces is given by mg where g is acceleration due to gravity and it's value taken as 
Therefore, 
The sum of forces in normal direction is given by 
therefore
Therefore, <u>normal force on the rod is 20 N</u>
Answer:
you have only seconds in which a person will accept or reject an employee or firm
Explanation:
First impression matters that's why when looking for employment with an organisation, lack of a tie for men may lead to automatic rejection. You have to be smart both intellectually and physically. Therefore, it means that you have only seconds in which a person will accept or reject an employee or firm.
