Question

statement given below are incorrect write the correct statements.

1) when the piston of common water pump is lowered its foot valve opens.

2) water barometer is possible provided barometer tube is 9 metre long.​

Answer 1

Answer:

=when the piston of the common water pump is lowered its foot valve opens.

When the piston of the common water pump is raised its piston valve opens

=water barometer is possible provided barometer tube is 9 meters long.​

Water barometer is possible provided barometer tube is 9 m long,​

Answer 2

Explanation:

$\sf \implies {\bigg (\dfrac{1}{2} \bigg)} \\ \\ \sf \implies {\bigg (\dfrac{1}{2} \bigg)} \\ \\ \sf \implies {\dfrac{1}{2}} \\ \\ \sf \implies {x^{2}\ +\ 3x\ 5\ =\ 0}$