![\boxed{\large{\bold{\textbf{\textsf{{\color{blue}{Answer}}}}}}:)}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Clarge%7B%5Cbold%7B%5Ctextbf%7B%5Ctextsf%7B%7B%5Ccolor%7Bblue%7D%7BAnswer%7D%7D%7D%7D%7D%7D%3A%29%7D)
a) What is the main connective of the following sentence?
( ● )∨ ∼ ( ≡∼ (∨))
(b) What is the main connective of the following sentence?
∼ ((● ∼ ) ⊃ (∼ ∨ ))
Answer: You do not specify what is being asked for. ∆E? ∆H?
∆E = (430 - 238) J = 192 J
∆H = 430 J
Explanation:
If asked for the value of ∆H the answer is simply the change in heat, and in the question, it states introduction of 430 J of heat is causing the system to expand.
Therefore ∆H = 430 J
If asked for ∆E, we know that ∆E = ±q (heat) + work (-P∆V) = ±q + w
The question states that 238 J of work are done AND the system expanded
(work is negative because expansion means work is done BY the system, releasing energy/heat... Conversely, if the system were compressed, work is done ON the system, absorbing heat/energy)
Therefore, ∆E = (430 - 238) J = 192 J
Answer:
75.7238461542 kg
20.4664723031 m
Explanation:
F = Force = 82 N
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
![s=ut+\frac{1}{2}at^2\\\Rightarrow 13=0\times t+\frac{1}{2}\times a\times 4.9^2\\\Rightarrow a=\frac{13\times 2}{4.9^2}\\\Rightarrow a=1.08288213244\ m/s^2](https://tex.z-dn.net/?f=s%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2%5C%5C%5CRightarrow%2013%3D0%5Ctimes%20t%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20a%5Ctimes%204.9%5E2%5C%5C%5CRightarrow%20a%3D%5Cfrac%7B13%5Ctimes%202%7D%7B4.9%5E2%7D%5C%5C%5CRightarrow%20a%3D1.08288213244%5C%20m%2Fs%5E2)
Force is given by
![F=ma\\\Rightarrow m=\dfrac{F}{a}\\\Rightarrow m=\dfrac{82}{1.08288213244}\\\Rightarrow m=75.7238461542\ kg](https://tex.z-dn.net/?f=F%3Dma%5C%5C%5CRightarrow%20m%3D%5Cdfrac%7BF%7D%7Ba%7D%5C%5C%5CRightarrow%20m%3D%5Cdfrac%7B82%7D%7B1.08288213244%7D%5C%5C%5CRightarrow%20m%3D75.7238461542%5C%20kg)
The mass of the block is 75.7238461542 kg
![v=u+at\\\Rightarrow v=0+1.08288213244\times 4.5\\\Rightarrow v=4.87296959598\ m/s](https://tex.z-dn.net/?f=v%3Du%2Bat%5C%5C%5CRightarrow%20v%3D0%2B1.08288213244%5Ctimes%204.5%5C%5C%5CRightarrow%20v%3D4.87296959598%5C%20m%2Fs)
Distance moved in the next 4.2 seconds
![d=vt\\\Rightarrow d=4.87296959598\times 4.2\\\Rightarrow d=20.4664723031\ m](https://tex.z-dn.net/?f=d%3Dvt%5C%5C%5CRightarrow%20d%3D4.87296959598%5Ctimes%204.2%5C%5C%5CRightarrow%20d%3D20.4664723031%5C%20m)
The distance moved is 20.4664723031 m
The correct option is d
<span>Weight changes depending on distance from the earth, mass does not.
Weight can be defined as the force exerted on an object due to the effects of gravity.
As we move far away from the Earth, the effects of gravity lessen and thus the weight decreases. (But the mass remains constant, because it only depends on the volume and density of the object)
</span>
I believe these are the answers
#1- D
#3-B
#4- D
#5- D
#6-A
#7-B
I was able to get everything except #3
I hope this helps though :)