🔭 physics

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

1. **Problem statement:** We need to find the sound level $\beta$ in decibels for a rustle of leaves with sound intensity $I = 1 \times 10^{-11}$ W/m² using the formula: $$\beta =

1. **State the problem:** We need to find how much more the weight of the module is on Earth compared to Venus, given the weight on Venus is 1356.27 kg. 2. **Given data:**

1. **State the problem:** We need to find how much more the weight of the Huygens lander is on Earth compared to Titan, expressed in kilograms. 2. **Given data:**

1. **State the problem:** We need to find how much heavier the Tesla Roadster is on Earth compared to Mars, given its weight on Earth in pounds and its weight on Mars in kilograms.

1. **Problem:** A vacuum gauge reads 30 kPa and the barometric pressure is 755 mm Hg. Find the absolute pressure in the tank. 2. **Formula:** Absolute pressure $P_{abs} = P_{barome

1. **Problem:** A vacuum gauge reads 30 kPa and the barometric pressure is 755 mm Hg. Find the absolute pressure in the tank. 2. **Formula:** Absolute pressure $P_{abs} = P_{barome

1. **Problem 9:** Find the minimum number of non-equal coplanar forces in equilibrium. - In physics, for forces to be in equilibrium, their vector sum must be zero.

1. نبدأ ببيان المشكلة: لدينا ثلاث قوى تؤثر في نقطة واحدة، مقدارها 60، 88، و60 ليون، واتجاهاتها هي: القوة الأولى شمالاً، القوة الثانية بزاوية 20 درجة جنوب الغرب، والقوة الثالثة بزاو

1. **Problem statement:** Given a body under three parallel forces at a point with magnitudes 0, 4, and 5 Newtons, find the angle between the second and third forces. 2. **Understa

1. **State the problem:** A green marble moving at 0.7 m/s hits a stationary blue marble. After collision, the blue marble moves at 1.0 m/s. Both marbles have the same mass of 3.0

1. **Stating the problem:** A green marble moving at 0.7 m/s hits a stationary blue marble. After collision, the blue marble moves at 1.0 m/s. Both marbles weigh 3.0 g. We need to

1. **Problem statement:** A water rocket is launched from the ground with an initial velocity of 32 m/s. It reaches a height of 44 m after 2 seconds and stays in the air for 6 seco