The pressure on a swimmer 40 m below the surface of water at sea level is.

Question

The pressure on a swimmer 40 m below the surface of water at sea level is. (A) 4.08 × 105 N / m 2 (B) 4.0 × 105 N / m 2 (C) 0.4 × 105 N / m 2 (D) None

Tardigrade Admin · Accepted Answer

Swimmer feel pressure at 20 m below P = P o + h ρ g = P o +40 × 103 × 10 P =1.01 × 105+40 × 103 × 10 =4 × 105+1.01 × 105=4.01 × 105 Nm -2

Q. The pressure on a swimmer $40 m$ below the surface of water at sea level is.

$4.08 \times 1 0^{5} N / m^{2}$

$4.0 \times 1 0^{5} N / m^{2}$

$0.4 \times 1 0^{5} N / m^{2}$

None

Swimmer feel pressure at $20 m$ below
$P = P_{o} + h ρ g = P_{o} + 40 \times 1 0^{3} \times 10$
$P = 1.01 \times 1 0^{5} + 40 \times 1 0^{3} \times 10$
$= 4 \times 1 0^{5} + 1.01 \times 1 0^{5} = 4.01 \times 1 0^{5} N m^{- 2}$

Q. The pressure on a swimmer 40m below the surface of water at sea level is.

4.08×105N/m2

4.0×105N/m2

0.4×105N/m2