"If students spend more time reading on their own, their ELA grades will increase, because they will have more practice analyzing what they read," because the first and third are simply opinions, music may be cool to some but not to everyone and not everyone prefers chocolate cookies.
To get the vapor pressure of the resulting solution, we use
the Raoult’s Law:
Psolution = (χsolvent) (P°solvent)
1st: Calculate the mol fraction of the solvent.
In this case, water is the solvent.
χsolvent = 3.7 mol / (3.7 mol + 0.6 mol)
χsolvent = 0.86
<span>2nd: Calculate the
vapor pressure.</span>
Psolution = (0.86) (23.8 torr)
Psolution<span> = 20.48 torr</span>
Answer:
Power P=246.78 KW
Explanation:
Mass of Elevator=4710 Kg
Can carry load =1910 Kg
Total Mass m to be lifted =4710 kg + 1910 Kg =6620 kg
speed = 3.80 m/s ⇒ per second distance traveled (height h) = 3.80 m and time t = 1 s
Using formula of Power P = 
P = 
P= 6620kg × 9.81 m/s² × 3.80 m / 1s
P= 246780.36 W
P=246.78 KW
The correct answer to the question will be D). Liquids and gases.
EXPLANATION:
Convection is the type of mode of heat transfer in which there will be actual motion of particles from one part to the another part of a fluid.
In case of liquids, the particles which are present at the bottom of the container get heated up first and become lighter. The lighter particles will go up and the top heavier particles will move downward. Again the same process will be repeated. In this way, a convection cycle is produced.
For instance, heating of water.
In case of gases, same thing happens just like liquid. The air particles will be heated up first and becomes lighter. These heated particles will move upward. Due to this, an empty space will be created in that region. In order to occupy the empty space, the air will flow from another region which is at low temperature as compared to the heated region. Again, the same process will be repeated which will results into the formation of convection cycle .
Hence, convection occurs both in liquids and gases.
Answer:
t=0.417s
Explanation:
After the ball hits the racket it is in freefall(assume air resistance as negligible)
so a=-g
use
x-x0=v0t+1/2at^2
Plug in givens
20=50t-4.9t^2
Solve quadratic equation using quadratic formula
t= 0.417 seconds, (the other answer is extraneous because it is too big because in 1 second, the ball travels 50 meters)
