🔭 physics

1. مسئله را بیان می‌کنیم: طول سیم مسی A دو برابر طول سیم مسی B است و قطر مقطع سیم B نصف قطر مقطع سیم A است. می‌خواهیم نسبت مقاومت الکتریکی سیم B به سیم A را پیدا کنیم. 2. فرمول مقا

1. **Problem Statement:** We have a uniform magnetic field $B$ in the N-S vertical plane with an angle of dip $\rho$. We need to determine which of the given options about motional

1. **Problem statement:** A block of mass $m$ and charge $q$ is connected to a fixed point $O$ by an inextensible string on a horizontal table. An electric field $E$ is applied per

1. **Problem statement:** A block of mass $m$ and charge $q$ is connected to a fixed point $O$ by an inextensible string on a horizontal table. An electric field $E$ is applied per

1. The problem is to identify some of the easiest formulas for acceleration and velocity in physics. 2. The key formulas are:

1. **Problem Statement:** Given a combination circuit with total voltage $V_T=20$, total current $I_T=5$, and total resistance $R_T=4$, find the individual current, voltage, and re

1. **Problem Statement:** Prove that for an ideal resistor (R), the area (cm) is related to the resistance and other parameters given that 1 cm = 0.7 (units not specified).

1. **State the problem:** A 5 kg block is pushed 3 m across a horizontal floor by a 25 N force applied at an angle of 30° above the horizontal. The coefficient of kinetic friction

1. **State the problem:** A 5 kg block is pushed 3 m across a horizontal floor by a 25 N force applied at an angle of 30° above the horizontal. The coefficient of kinetic friction

1. المشكلة: لدينا ثلاث رسوم بيانية تمثل العلاقة بين الزمن (الزمن) والتعرض (التعرض) لمادة Fe2O3 في الهواء. 2. الهدف: تحديد أي من الرسوم البيانية الثلاثة تمثل مدة التعرض في الهواء لل

1. **Problem Statement:** Derive the dimensions of the following physical quantities:

1. **Problem Statement:** Calculate the force components acting on a 101 kg block on a 15º inclined plane, given the total force $F = 508.94$ N.

1. The problem is to find the force $F$ which is given as 378 N. 2. The formula for force in Newtonian mechanics is $F = ma$, where $m$ is mass and $a$ is acceleration.

1. **State the problem:** We need to find the net accelerating force $F$ required to accelerate a machine table of mass $m=540$ kg from rest to a velocity $v=0.53$ m/s over a dista

1. **State the problem:** A 5 kg block slides on a horizontal surface with a coefficient of kinetic friction $\mu_k = 0.3$. The block's initial speed is 10 m/s. We need to find the

1. **State the problem:** A projectile is launched at an angle of 40 degrees with an initial speed of 20 m/s. We need to find its maximum height. 2. **Formula used:** The maximum h

1. **State the problem:** A car starts from rest (initial velocity $u=0$) and accelerates uniformly to a final velocity $v=30$ m/s in $t=8$ seconds. We need to find the acceleratio

1. The problem is to find the acceleration in m/s^2 up the incline. 2. The formula for acceleration up an incline when a force is applied is:

1. The problem asks whether the statement "If a system is in rotational equilibrium, the Torque acting on the system must be non-zero" is true or false. 2. Recall the definition of

1. **State the problem:** A ring is held stationary by three strings with tensions $T_1$, $T_2$, and $T_3=10$ N. $T_1$ pulls due East, $T_2$ pulls at 30° West of North, and $T_3$ p

1. The problem involves two velocities: A with speed 10 km/h and B with speed 20 km/h. 2. B moves relative to A in a direction north-east (or upward relative to A). We need to find