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andrezito [222]
3 years ago
8

What is changed when matter undergoes a physical change?

Chemistry
1 answer:
Furkat [3]3 years ago
3 0
I think its the mass that changes but im not sure
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Design techniques and materials that reduce the negative environmental
Scrat [10]

Answer:

Green design

Explanation:

The word ‘Green’ represents designs which are eco friendly and less harmful to humans and other organisms. It helps in the protection of natural resources such as water, air etc.

Green Design are also referred to as techniques and materials that reduce the negative environmental impact of a structure.

3 0
4 years ago
In a Dam, If we doubled the depth of the dam the hydrostatic force will be ?
AnnZ [28]

Answer: Option (A) is the correct answer.

Explanation:

Force acting on a dam is as follows.

                  F = \frac{1}{2}\rho g\omega H^{2} .......... (1)

Now, when we double the depth then it means H is increasing 2 times and then the above relation will be as follows.

                F' = \frac{1}{2}\rho g\omega (2)^{2}

               F' = \frac{1}{2}\rho g\omega 4 ........... (2)

Now, dividing equation (1) by equation (2) as follows.

          \frac{F}{F'} = \frac{\frac{1}{2}\rho g\omega H^{2}}{\frac{1}{2}\rho g\omega 4}  

Cancelling the common terms we get the following.

                 \frac{F}{F'} = \frac{1}{4}    

                   4F = F'

Thus, we can conclude that if doubled the depth of the dam the hydrostatic force will be 4F.

4 0
3 years ago
Answer this question pleas
Korvikt [17]

Answer:nope

Explanation:

Just no

4 0
3 years ago
Read 2 more answers
The electronic configuration of an element is 1s^2 2s^2 2p^6. Hkw many valence electrons does it have
Aliun [14]
It has 8 valence electrons.
5 0
4 years ago
Acids and bases:
Papessa [141]
Acids and bases ionoze the water. so it would have to be A
6 0
3 years ago
Read 2 more answers
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