Answer:
A= 203 KJ
B= 54 Kg
Explanation:
The initial specific volumes and internal energies are obtained from A-12 for a given pressure and state. The enthalpy of the refrigerant in the supply line is determined using the saturated liquid approximation for the given temperature with data from A-11. The mass that has entered the tank is:
Δm = m₂ – m₁
= V(1/α₂ – 1/α₁)
= 0.05 (1/0.0008935 – 1/ 0.025645)Kg
= 54Kg
The heat transfer is obtained from the energy balance:
ΔU=
+ 
m₂u₂ – m₁u₂ = 
+ 
= m₂u₂ – m₁u₁ –
= V/α₂u₂ - V/α₁u₁ –
=(0.05/0.0008935 . 116.72 – 0.05/0.025645 . 246.82 – 54.108.28) Kj
= 203 KJ
Answer:
(I). The sum of the vectors is (7i-5j).
(II). The sum of the vectors is (8i+7j).
Explanation:
Given that,
(I). Vector A 
Vector B 
Suppose, (II). Vector A 
Vector B 
(I). We need to calculate the sum of the vectors
Using formula of sum

Where,


![\vec{C}= sum of the vector A and bPut the value into the formula[tex]\vec{C}=(3i-12j)+(4i+7j)](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%3D%20sum%20of%20the%20vector%20A%20and%20b%3C%2Fp%3E%3Cp%3EPut%20the%20value%20into%20the%20formula%3C%2Fp%3E%3Cp%3E%5Btex%5D%5Cvec%7BC%7D%3D%283i-12j%29%2B%284i%2B7j%29)

(II). We need to calculate the sum of the vectors
Using formula of sum

Put the value into the formula


Hence, The sum of the vectors is (7i-5j).
The sum of the vectors is (8i+7j).
0.17m/s²
Explanation:
According to newtons second law "the force on a body is depends on its mass and acceleration"
Force = mass x acceleration.
The more the mass and acceleration, the more the force a body possess.
Given that the acceleration of the body is 0.33m/s²
Force = 0.33 x mass
If the force on the body is halved, the acceleration will also be halved;
i.e:
Force = F
= 0.33 x mass
F =
x 0.33 x mass
F = 0.17 x mass
Force = acceleration x mass
Acceleration is 0.17m/s²
learn more:
Acceleration brainly.com/question/3820012
#learnwithBrainly
A person would contact his fellow students and his friends inquiring whether they have encountered the same issue as it is with him.
<h3>What is program?</h3>
The program is a system software which helps students to learn or accomplish any projects.
The class requires a student to use a program that you must download on his computer. He have waited until day 5 of the week to download the program and need it for an assignment that is due in 2 days now. He is having issues with the program.
He must contact his fellow friends and students whether they are facing the same error in starting the program. There are many resources to be used in place of that software. He can also use the internet to find out the troubleshooting methods. He can also contact the software developer and discuss the problems regarding software.
The effective communication can resolve the issues. If no communication is there, no problem is being solved. The person will never understand what other person is facing until and unless he doesn't speak.
Therefore, proper communication and complete details must be shared in order to solve any issue. Any critical problem can be solved even by just discussing.
Learn more about program.
brainly.com/question/11023419
#SPJ1
Explanation:
velocity = wavelength × frequency => v= f1 × λ => f1 = v/ λ
λ = stays the same
v = doubles
2v = f2 × λ
2v/λ = f2
now ,
f2/f1= 2vλ/ vλ = 2
f2 = 2f1
therefore frequency is doubled