🔭 physics

1. **Problem statement:** A crossbow bolt is shot straight upward with an initial velocity of 288 ft/s. We want to find the time it takes for the bolt to reach its highest point. 2

1. **State the problem:** Car A moves due East at 10 m/s, and car B moves South 25° East at 20 m/s. The initial distance between them is 40 km. We want to find how fast the distanc

1. **Problem statement:** A capacitor is charged to 12.0 V and connected to a voltmeter with internal resistance 3.40 M\Omega. After 4.00 s, the voltmeter reads 3.0 V. Find (a) the

1. **Problem Statement:** Given a circuit with a 28.0 V battery, an unknown resistor $R$, an unknown emf $\varepsilon$, a 6.00 $\Omega$ resistor with 4.00 A current, and a 3.00 $\O

1. **Problem statement:** Find the components of the 200 N force acting at 45° downward from horizontal, the resultant magnitude, and the angle when combined with a 300 N horizonta

1. **Асуудал:** 300 г масстай куб биеийн нягтыг ол. 2. **Формул:** Нягт $\rho = \frac{m}{V}$, энд $m$ нь масс, $V$ нь эзлэхүүн.

1. The problem is to find the formula to calculate speed. 2. Speed is defined as the distance traveled divided by the time taken to travel that distance.

1. **State the problem:** We need to find the average speed of an aeroplane that travelled 1275 miles in 3 hours. 2. **Formula:** Average speed is given by the formula:

1. **Problem statement:** Given two weights each of mass $M$ hanging from a horizontal string (string 2) with tension 30 N, and two angled strings (strings 1 and 3) each making an

1. **Problem:** A point charge has a charge of $6.00 \times 10^{-11}$ C. At what distance from the point charge is the electric potential 12.0 V? 2. **Formula:** The electric poten

1. **Problem Statement:** We have a hydraulic lift with a small disc of area $2.5\ \text{cm}^2$ and a large disc of area $200\ \text{cm}^2$. A force of 30 N is applied to the small

1. **Problem Statement:** A body is in equilibrium under three forces. Two forces are given: one is 10 N acting due east, and the second is 5 N acting at 60° north of east. We need

1. **State the problem:** We need to find the force applied at the end of the handle of a screw jack to lift a load of 2000 N. 2. **Given data:**

1. **State the problem:** We have a screw jack with a pitch of 0.5 cm and a handle length of 2 cm. We want to determine the mechanical advantage or related parameters. 2. **Relevan

1. **Problem Statement:** An effort of 20 N is applied to lift a load of 120 N using a machine. The effort moves through a distance of 50 m, and the load moves through a distance o

1. **Stating the problem:** A machine applies an effort of 20 N to lift a load of 120 N. The effort moves through 50 m, and the load moves through 200 m. We need to calculate:

1. **State the problem:** A metal cube with side length 10.0 cm weighs 29.4 N in air and 19.6 N when submerged in a fluid. We need to find the density of the fluid. 2. **Relevant f

1. **State the problem:** We need to find the magnitude and direction of the resultant force from two forces: $f_1 = 50$N at northeast by 37° and $f_2 = 100$N at northwest by 60°.

1. **Problem statement:** We have two blocks: $M_1=1.5$ kg on top of $M_2=5$ kg. A horizontal force $F=10$ N acts on $M_2$. The surface under $M_2$ is frictionless. The coefficient

1. Problem statement: We analyze static equilibrium of a beam with forces applied at angles and distances from a fulcrum. 2. Key formula: For static equilibrium, the sum of torques

1. **State the problem:** We have two football players colliding inelastically and coming to a complete stop after the collision. Player A has mass $m_A = 75$ kg and velocity $v_A