This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Hey Ashok, good to see you again. C. Match the following: 1. Pressure → a. Pascal 2. Barometer → f. Atmospheric pressure 3. Weight → d. Gravitational force 4. Torricelli barometer → e. Simple barometer 5. Increased pressure → c. Decreased contact area 6. S.I. Unit → b. P (Assuming 'P' refers to the common symbol for pressure, as 'Pascal' is already matched with the SI unit of pressure.) D. Answer the following questions: 1. What is the SI unit of pressure? The SI unit of pressure is the Pascal (Pa). 2. On which things pressure depends? Pressure depends on two main factors: • The force applied. • The area over which the force is distributed. 3. How would you distinguish between force and pressure? Force is a push or pull that can cause an object to accelerate or deform; it is a vector quantity. Pressure is the force applied perpendicular to a surface per unit area; it is a scalar quantity. 4. How does the pressure exerted by liquid change with depth? The pressure exerted by a liquid increases with depth because the weight of the liquid column above a point increases. 5. A drawing pin is pushed against a wooden table with a force of 10 N. Calculate the pressure exerted by the pin at a point on a table if the area of the point is 180 cm^2. Step 1: Identify the given values. F = 10 N A = 180 cm^2 Step 2: Convert the area to square meters (m^2). A = 180 cm^2 × (1 m100 cm)^2 A = 180 × (1)/(10000) m^2 A = 0.018 m^2 Step 3: Calculate the pressure using the formula P = (F)/(A). P = 10 N0.018 m^2 P ≈ 555.56 Pa The pressure exerted by the pin is 555.56 Pa. 6. A person weight of 120, 96. The area under one foot of the person is 180 cm^2. Find the pressure exerted on the ground by the person. When he is standing? Assumption: The person's weight is 120 N, and they are standing on two feet. The area under one foot is 180 cm^2. Step 1: Identify the given values. F_total = 120 N A_one foot = 180 cm^2 Step 2: Calculate the total area of contact when standing on two feet. A_total = 2 × A_\