Given Information:
Inlet Temperature of hot air= Th₁ = 450K
Exit Temperature of hot air = Th₂ = 350K
Inlet Temperature of cold air = Tc₁ = 300K
Volume flow rate of hot air = vh = 0.02 m³/s
Volume flow rate of cold air = vc = 1 m³/s
Required Information:
Exit Temperature of cold air= Tc₂ = ?
Answer:
Exit Temperature of cold air = Tc₂ = 302 °C
Explanation:
In a heat exchanger, the cold air absorbs heat that is lost by the hot air,
Heat absorbed by cold air = Heat lost by hot air
Therefore, the exit temperature of the cold air is 302 °C or 575K
Note:
m = ρv
Where ρ is density of air and v is the volume flow rate and m is the mass flow rate.
cp is the specific heat capacity of air.
Answer:
Just be your true authentic self. The more you try to be like someone else, or be a follower, or conform yourself to fit in, the less true to yourself you will be. Believe it or not, being different is attractive. Yet at the same time, nothing is really normal. We all have differences that make us unique; therefore no one is 100% normal. To "win friends" you just need to be you. It'll come naturally - even if you're an introvert. You don't necessarily need to try. You will find you're people someday. And that's a fact.
As for how to influence people, you really just need to make sure you're acting in a way that is inspiring. Think about things from a different perspective. Try to do your best and be your best self 24/7. You can change people's opinions just by being nice. You can remove people's grudges by lending a helping hand. You don't need to stop global warming, or discover a drug that can cure cancer to make a difference. The small things that you do, like holding a door for a stranger, or buying groceries for an elder in your neighborhood have an immeasurable impact. Try do more of these small things, and before long you'll notice your influence in your community and maybe even the world.
Above all, be you.
Answer:
32500 kg m/s east, 42500 kg m/s west. Second car has larger momentum
Explanation:
The momentum of an object is given by
p = mv
where
m is the mass
v is the velocity
For the first car, m = 500 kg and v = 65 m/s east, so the momentum is
east
For the second car, m = 500 kg and v = 85 m/s west, so the momentum is
west
By comparing the two momentum, we see that the second car has larger momentum.
the water specific heat will remain at 4.184.
Material from (A.) Flare can reach the Earth causing radio blackouts. Solar flares are sudden, rapid and intense variation in brightness that is seen on the sun. It occurs when magnetic energy that has built up in the solar atmosphere, then suddenly released.