We haven\'t covered pressure yet in class, so any help is grealty appreciated! T

Question

We haven't covered pressure yet in class, so any help is grealty appreciated! Thank you!!

1) Suppose a force of 1.00 X 104 N is put on a 10.0 cm by 10.0 cm square.  What is the pressure? Select all that apply.

2) Which of the following give the largest pressure?

a) 1 N force exerted over a 1 cm2 area

b) 10 N force exerted over a 1 m2 area

c) 1 N force exerted over a 1 nm2 area

3) Suppose a pressure sensor that measures absolute pressure is submerged 10.0 m below the surface of a massive cooking oil container. Determine the pressure at this depth. Select all that apply

a) 2.71 x 10^3 Pa; b) 9.81 x 10^4 Pa; c) 1.99 x 10^5 Pa; d) 0.971 atm; e) 1.97 atm

Explanation / Answer

part 1 :

Pressure = Force/area

P = 1*10^4/(0.1* 0.1)

P = 1 *10^6 Pa

-----------------------------------------

P1 = 1 * 1*10^-4 = 1*10^-4 Pa

P2 = 10 *1 = 10 pa

P3 = 1*10^-6 * 1 *10^-9 = 1*10^-15 Pa

so

B) have highest pressure

--------------------------

pressure P = rhio gh

P = 1000* 10 * 9.8

P = 9.81 *10^4 Pa

option B it is

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