🔭 physics

1. **Problem Statement:** Find the resultant of two forces: 3N acting at 10 degrees and 5N acting at 120 degrees. 2. **Formula Used:** The resultant $R$ of two forces $F_1$ and $F_

1. **State the problem:** We have two forces, 6N and 4N, acting at an angle of 60 degrees to each other. We need to find the resultant force and the angle $\alpha$ it makes with th

1. **State the problem:** We need to find the resultant force of two forces acting at an angle. The first force is 6N, the second force is 4N, and the angle between them is 60 degr

1. **State the problem:** (a)(i) Explain the meaning of the angular resolution (විකාලය) $m$ of a telescope.

1. **State the problem:** We are given the half-life of a substance as 10.7 days and need to find the decay rate constant $k$. 2. **Formula used:** The decay rate constant $k$ is r

1. The problem asks to find the decay rate constant $k$ for a substance with a half-life of 12.9 days. 2. The formula relating half-life $t_{1/2}$ and decay rate $k$ is:

1. **Problem Statement:** A person walks from point P along a circular path, passing through points Q, R, S, and returns to P. We need to determine which statements about distance

1. **State the problem:** An object starts at position 0 on the number line, moves 2 units to the right, then 4 units to the left. We need to find the total distance traveled and t

1. **State the problem:** An object starts at position 0 on the number line, moves 2 units to the right, then 4 units to the left. We need to find the total distance traveled and t

1. **Problem Statement:** Given vectors $\vec{A}$ and $\vec{B}$ with magnitudes and directions:

1. The problem asks: "How much time will it take?" but does not provide any context or details such as distance, speed, or any other variables. 2. To find time, the general formula

1. **Problem statement:** A vacuum gauge reads 5.4 psi and the barometric pressure is 28.5 in Hg. We need to find the absolute pressure in the tank. 2. **Formula:** Absolute pressu

1. **Problem statement:** A vacuum gauge connected to a tank reads 30 kPa at a location where the barometric reading is 755 mm Hg. Determine the absolute pressure in the tank. 2. *

1. **Problem Statement:** A triangular structure with a horizontal base of 6 m and a side of 5 m inclined upwards supports a vertical weight of 500 N at the top vertex. A small hor

1. **Stating the problem:** A 150 N weight is placed on a wire stretched along a triangular frame. The triangle has a base of 6 m and a left side of 5 m. A 500 N weight hangs from

1. **State the problem:** (a)(i) Define internal energy.

1. **State the problem:** An airplane accelerates from rest to a lift-off velocity of 71 m/s in 26.1 seconds. We need to find the airplane's acceleration.

1. **Stating the problem:** We want to understand how the length of a conductor affects its electrical resistance. 2. **Formula used:** The resistance $R$ of a conductor is given b

1. The problem asks why water is not used as a hydraulic fluid. 2. Hydraulic fluids must have certain properties: incompressibility, lubrication, corrosion resistance, and stabilit

1. The problem involves expressing a measurement with its uncertainty, given as $4.6$ cm³ ± some value in cm³. 2. The general form for a measurement with uncertainty is $\text{valu

1. **Problem statement:** A car travels 60 km in 2 hours. We need to find how far it will travel in 5 hours. 2. **Formula used:** Distance = Speed \times Time