🔭 physics

1. نبدأ بفهم السؤال: المروحة تدور بسرعة زاوية مقدارها $4\pi$ راديان. 2. المطلوب هو حساب زمن الدورة الواحدة للمروحة.

1. **State the problem:** A particle of mass 2.5 kg is acted upon by its weight and two external forces \(\mathbf{F}_1 = 3\mathbf{i} - 2\mathbf{j}\) N and \(\mathbf{F}_2 = -\mathbf

1. **Problem Statement:** We have an alternating current measured at equal intervals of 5 ms with values: Time (ms) = 0, 5, 10, 15, 20, 25, 30 and Current (A) = 0, 0.9, 2.6, 4.9, 5

1. **Stating the problem:** We have two parallelograms AB and BJ with sides AB = 10 cm and BJ = 16 cm. 2. Forces of magnitudes 700 and 70 act on AB and J respectively (assuming the

1. **Problem Statement:** Determine the number of complete revolutions a motorcycle wheel will make in travelling 2 km, given the wheel’s diameter is 85.1 cm. 2. **Formula and Expl

1. The question "how much time it will take" is incomplete as it lacks context such as distance, speed, or any other relevant parameters. 2. To calculate time, the general formula

1. **Problem (c):** Determine the number of complete revolutions a motorcycle wheel will make in travelling 2 km, given the wheel’s diameter is 85.1 cm. 2. **Formula:** The distanc

1. **State the problem:** We are given a mass of 10 kg and a volume of 50 m^3. We want to find the density of the object. 2. **Formula:** Density ($\rho$) is defined as mass ($m$)

1. **State the problem:** Two resistors of 8 ohms and 10 ohms are connected in parallel, and the total current flowing through the combination is 9 A. We need to find the current f

1. **Problem statement:** A voltage source of 20V is applied across a 2.5-ohm rheostat. We need to calculate the power dissipated in the rheostat. 2. **Formula used:** The power di

1. **State the problem:** Two resistors with resistances $5\ \Omega$ and $7\ \Omega$ are connected in series to a $60$-volt source. We need to find the power absorbed by the $5\ \O

1. **Problem Statement:** (c) Determine the number of complete revolutions a motorcycle wheel will make in travelling 2 km, given the wheel’s diameter is 85.1 cm.

1. **Problem statement:** We have a particle of mass $m=2000$ kg moving along the $x$-axis from $x=0$ to $x=9.0$ m under a force $F_a$. The acceleration $a(x)$ vs. position $x$ gra

1. **State the problem:** We are given that the remaining amount of carbon-14 in the cave paintings is 4% of the original amount. We want to estimate the age $t$ of the paintings u

1. **Problem:** Asha drives 45 km north, then 15 km east. Find the total distance covered and displacement. 2. **Distance formula:** Distance is the total length traveled, so add a

1. **Problem statement:** We are given the average daily oil production on the Norwegian continental shelf in 2023 as 1.794 million barrels, with 1 barrel approximately equal to 15

1. Énoncé du problème : Une personne marche rapidement à une vitesse de 6 km/h. On veut écrire une fonction qui relie la distance parcourue $d$ au temps écoulé $t$.

1. **State the problem:** We need to make $t$ the subject of the formula given by $$S = ut + \frac{1}{2}at^2$$

1. The problem is to understand and use the formula for displacement in uniformly accelerated motion: $$S = ut + \frac{1}{2}at^2$$ where $S$ is displacement, $u$ is initial velocit

1. **State the problem:** We are given a device with an electrical power consumption of 200W and a useful output power of 120W. We need to find the power losses in Watts.

1. **State the problem:** Calculate the total energy consumed per day in kWh given a piecewise linear power load profile $P(t)$ in watts over 24 hours. 2. **Formula:** Energy consu