"Ace AS Physics: Solved NSSCAS Past Paper 1 Questions 2024 Explained Clearly"
Certainly! Below are the answers and explanations for the questions in the Namibia Senior Secondary Certificate Advanced Subsidiary (NSSCAS) Physics Paper 1 Question 1 Which of the following is a unit of pressure? A: kg m −1 s −2 B: kg m s −2 C: kg m 2 s −2 − D: kg m s −1 Explanation: Pressure is defined as force per unit area. The unit of force is kg m s −2 , and the unit of area is m 2 . Therefore, the unit of pressure is kg m −1 s −2 . Answer: A Question 2 What is the absolute uncertainty in the volume of the block? Given: Length = (4.00 ± 0.01) cm Width = (3.00 ± 0.01) cm Height = (2.00 ± 0.01) cm Explanation: The volume V is calculated as: V = length × width × height V = 4.00 × 3.00 × 2.00 = 24.00 cm 3 The absolute uncertainty in the volume is the sum of the relative uncertainties: ΔV/V = ΔL/L + ΔW/W + ΔH/H ΔV/24.00 = 0.01/4.00 + 0.01/3.00 + 0.01/2.00 Δ...