🔭 physics

1. **State the problem:** A hammer of mass 2.30 kg falls from the top of a 4.60 m high scaffold. We need to find the hammer's speed when it is 1 meter above the ground. 2. **Identi

1. **State the problem:** We need to find the efficiency of an electric motor that uses 78.0 J of electrical energy to accelerate a 280 g toy car from rest to 14.0 m/s over 8.3 m i

1. **State the problem:** We have an electric motor that uses 78.0 K (kilojoules) of electrical energy to accelerate a 280 g toy car from rest to 14.0 m/s over 8.3 m in 3.80 s. We

1. **State the problem:** We have a barometer reading of 1013.5 hPa with an absolute error less than 0.3 hPa. We need to find the possible range of the actual atmospheric pressure.

1. **Stating the problem:** A train moves along a straight line with uniform acceleration. Initially, its speed is 20 km/h. When it passes the next kilometer post, its speed is 30

1. **Problem statement:** A bullet moving at an initial velocity of $600\ \text{m/s}$ penetrates a target to a depth of $5\ \text{cm}$ and slows down to $200\ \text{m/s}$. Assuming

1. **Problem statement:** A particle starts from rest and travels 64 m in 4 s under constant acceleration. We need to find: - The time to travel half the total distance (32 m).

1. **Problem statement:** We have a vertical rod of length 2 m fixed at point M. A force of 49 N is applied at the top of the rod making a 30° angle with the vertical. We want to f

1. **Problem Statement:** Determine the moment of inertia of the Android logo about the y-axis. 2. **Understanding Moment of Inertia:** The moment of inertia $I_y$ about the y-axis

1. **Problem Statement:** Find the largest force $F$ that can be applied to block A without causing slipping, given masses $m_A=30$ kg, $m_B=70$ kg, and coefficient of static frict

1. **Problem statement:** Given two blocks A and B with masses $m_A = 30$ kg and $m_B = 70$ kg, and coefficient of friction $\mu_s = 0.1$, find the largest force $F$ that can be ap

1. The problem is to understand the mathematical representation of a wave. 2. A common formula for a sinusoidal wave is:

1. **Problem Statement:** We have a force $F$ of magnitude 300 N acting on a plane at point $B$ directed diagonally downwards towards point $A$. Points are located as follows: $O$

1. **State the problem:** A bus travels at a speed of 60 kilometers per hour. We want to find out how far it will travel in 8 hours. 2. **Formula used:** Distance traveled is calcu

1. **Problem Statement:** We need to find the final speed of a sprinter at the end of the acceleration phase, given the acceleration and time or distance (not explicitly stated her

1. The problem asks to identify which set of quantities are considered basic quantities in physics. 2. Basic quantities, also known as fundamental quantities, are those that cannot

1. **Stating the problem:** We have two vectors, one given as $\mathbf{a} = (3,2)$ and another vector (not explicitly given, but implied by the problem context). We need to find th

1. **Problem Statement:** Given two forces $p$ and $q$, their resultant is $\sqrt{3}q$ and makes an angle of $30^\circ$ with the direction of $p$. We need to show that $p$ is eithe

1. **Problem statement:** A body of mass 2 kg floats on water. Given the density of water is 1000 kg/m^3, calculate the volume of the body immersed in water. 2. **Formula used:** W

1. **Stating the problem:** We are given that the force of attraction $F$ between two bodies varies directly as the product of their masses $m_1$ and $m_2$, and inversely as the sq

1. **Stating the problem:** We want to prove the equation of the resultant force when two forces act at a point using the parallelogram of forces method. 2. **Concept:** When two f