🔭 physics

1. **State the problem:** A hand glider dives at 25 mph at an angle of 60° below the horizontal (East). We need to find the component form of the velocity vector. 2. **Formula and

1. **Stating the problem:** A 4 kg block is sliding on a horizontal surface at constant speed with a force $P$ applied at an angle of 30° above the horizontal. We need to determine

1. **Problem statement:** A 4 kg block rests on a horizontal surface. A force vector $P_N$ acts at an angle of 30° above the horizontal. The block is on the verge of sliding. We ne

1. **Problem statement:** A particle starts from rest at point O and accelerates with vector acceleration $\mathbf{a} = 5\mathbf{i} - 11\mathbf{j} + 2\mathbf{k}$ m/s$^2$ for 4 seco

1. **Problem statement:** We want to find the equation for the rocket weight $W$ at time $t$ where $0 \leq t \leq T$, given initial weight $W_1$ and final weight $W_T$ at time $T$.

1. **State the problem:** We need to find the density of a rock given its mass and volume. 2. **Formula:** Density ($\rho$) is defined as mass ($m$) divided by volume ($V$):

1. **Problem Statement:** Find the instantaneous velocity of the motorcyclist at time $t=3$ seconds given the position data. 2. **Understanding Instantaneous Velocity:** Instantane

1. **State the problem:** We have a square concrete column with base length 24 cm supporting a mass of 31,000 kg. We want to check if the column is safe given the maximum compressi

1. The problem states: Tom can jump 1.62 meters in the high jump. 2. This is a straightforward statement of a measurement, so no calculation is needed.

1. **State the problem:** We need to find the time it takes for light to travel from the Sun to the Earth. 2. **Given data:**

1. The problem asks to identify the types of current supplied by batteries and mains electricity. 2. The current supplied by batteries is called **direct current (DC)** because it

1. The problem asks: What is the name of the current where charge only flows in one direction? 2. In physics and electrical engineering, current refers to the flow of electric char

1. **Problem Statement:** Describe the movement of charge in (a) a direct current (DC) supply and (b) an alternating current (AC) supply. 2. **Direct Current (DC) Supply:**

1. **State the problem:** A ball rotates 6.6 times every 16 feet and moves at a speed of 53.32 km/h. We want to find how many times it rotates every minute. 2. **Convert speed to f

1. Problem statement: We want to write a vector function that describes the motion of the lollipop head based on the given data. 2. From the data, the position of the lollipop head

1. **Énoncé du problème** : Déterminer l'accélération $a$ d'un corps à partir d'un graphique position-temps $x(t)$.

1. The problem asks to convert the speed of light from kilometers per second (km/s) to centimeters per second (cm/s) and express the result in standard form. 2. We know the speed o

1. **State the problem:** Calculate the value of the expression:

1. **State the problem:** Calculate the value of the expression:

1. The problem is to evaluate the expression $$E = (5.67 \times 10^{-8} \text{ W m}^{-2} \text{ K}^{-4}) \times (300 \text{ K})$$ and understand its meaning. 2. This expression loo

1. **Stating the problem:** Calculate the porosity percentage for each bead size using the formula for porosity: $$\text{Porosity} = \frac{\text{Volume of voids}}{\text{Total volum