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Ch.10 - Gases
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970당신이 사용하는 게 아니라요?교과서 변경
10장, 문제 15c

Suppose that a woman weighing 130 lb and wearing high-heeled shoes momentarily places all her weight on the heel of one foot. If the area of the heel is 0.50 in.2, calculate the pressure exerted on the underlying surface in c. atmospheres.

검증된 단계별 안내
1
Convert the weight of the woman from pounds to newtons. Use the conversion factor: 1 lb = 4.44822 N.
Calculate the force exerted by the woman on the heel using her weight in newtons.
Determine the pressure exerted by dividing the force by the area of the heel. Use the formula: Pressure = Force / Area.
Convert the area from square inches to square meters. Use the conversion factor: 1 in² = 0.00064516 m².
Convert the pressure from pascals to atmospheres. Use the conversion factor: 1 atm = 101325 Pa.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
3m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Pressure

Pressure is defined as the force applied per unit area. It is calculated using the formula P = F/A, where P is pressure, F is the force (in this case, the weight of the woman), and A is the area over which the force is distributed. Pressure is typically measured in units such as pascals (Pa) or atmospheres (atm).
추천 영상:

Unit Conversion

Unit conversion is the process of converting a quantity expressed in one set of units to another. In this problem, the weight of the woman is given in pounds, and the area of her heel is in square inches. To calculate pressure in atmospheres, it is necessary to convert these units to a compatible system, such as converting pounds to newtons and square inches to square meters.
추천 영상:
가이드 코스
01:56
Conversion Factors

Atmospheric Pressure

Atmospheric pressure is the pressure exerted by the weight of the atmosphere above a given point. At sea level, standard atmospheric pressure is defined as 1 atm, which is equivalent to 101,325 pascals. Understanding this concept is crucial for interpreting the calculated pressure in relation to standard atmospheric conditions.
추천 영상:
가이드 코스
02:09
Total Pressure Example