1.

We do not fell the air pressure. Class 7 ​

Answer»

Answer:

1.-0 B '!

SO," Y"

p ~~

su.rfose {"zf\. = {"2-~ = C

A-,\e. t:,~oJee.n A (If\-J B

. /,2 A'L 'L

ccSe = '- - - B

2-A--B

=0

2...0 D

5. C C fIO F/~ ~ ~f / -t- (J>. fjL -+- '2-eLf) (!if) COSE

I a _ 4 -v 2 + 4 f'2- C«5 e-

Ll = "I-fl CaSe cose = t"- e oc 45·

~2.. 1\

f,-12-- -::: ~\- 'F2- -::.\ 0

'2

'L

'L

5l\ ==

F"L -t- '20 ~ "\ ~2--

-t ot>

2..-4-00 -

(FL -T 5 f =

~z-1.-t- \6 f·

2~

p_oa -

F2...= 30


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