Answer:
A
Explanation:
1 lb = .453 kg...so...103 x .453 = 46.72 kg
you then multiply that by the force of gravity which is 9.8(m/s2)...so...
46.72 x 9.8 = 458 newtons(kg x m/s^2), which is the force.
pressure (in pascals) = Force(N) / Area (m2)
we need to convert 10cm2 to m2 which = .001m^2
458 / .001 = 458000 = 4.58 x 10^5 Pa
Options for the question;
A. 4.59 × 105 Pa
B. 4.59 × 103 Pa
C. 4.59 × 101 Pa
D. 4.59 × 10ˉ1 Pa
E. 4.59 × 10ˉ3 Pa
Answer:
Pressure = 458000 = 4.58 x 10^5 Pa; Option A
Explanation:
Bringing out the parameters in the question;
Weight = 103 lbs = 46.72 kg (Upon conversion by diving by 2.205)
Area occupied = 10.0 cm2 = 0.001m2 (Upon conversion by dividing by 10000)
Pressure = ?
The relationship between pressure and Area is given as;
Pressure (in pascals) = Force(N) / Area (m2)
Force = Mass * Gravity = 46.72 * 9.8 = 458 N
Pressure = 458 / 0.001 = 458000 = 4.58 x 10^5 Pa
