🔭 physics

1. **State the problem:** A cup of coffee initially at 95°C is cooling in a room at 20°C. When the coffee's temperature is 72°C, it is cooling at a rate of 1°C per minute. We need

1. **State the problem:** We have a lift with a total mass of 1200 kg (lift + person) accelerating upwards at $\frac{7g}{10}$ m/s², where $g$ is the acceleration due to gravity. We

1. The problem asks to round the total energy supplied, which is 873600 J, to 2 significant figures. 2. Identify the first two significant figures in 873600: they are 8 and 7.

1. The problem involves calculating the total energy supplied over a 12-hour period, given an energy value of 436800 J. 2. Since the energy supplied is given as 436800 J, and the t

1. **State the problem:** We have a block of mass $m=7$ kg moving at initial speed $v=2$ m/s on a flat surface with kinetic friction coefficient $\mu_k=0.19$. We need to find:

1. **State the problem:** We have a sculpture made of two parts: a cuboid and a square-based pyramid on top. Both have bases of side 3 cm.

1. **State the problem:** A freely falling object requires 1.50 s to travel the last 30.0 m before it hits the ground. We need to find the height from which it fell.

1. **State the problem:** We have two drones flying from points P to Q and Q to R with given bearings and speeds. We need to find:

1. **State the problem:** We need to find the pressure exerted on the ground by a storage tank. The force exerted is 10,000 newtons, and the base area of the tank is a rectangle me

1. **State the problem:** We have an electron beam with velocity $v = 7.15 \times 10^7$ m/s passing through an electric field created by a voltage $U = 1440$ volts across a distanc

1. **State the problem:** We have a particle of mass 6 kg moving up a rough slope inclined at 15° to the horizontal. A force of 30 N pulls the particle up the slope, and the partic

1. **State the problem:** A submarine starts at 80 meters below sea level and ascends at 8 meters per hour for 4 hours. We need to find its new depth relative to sea level. 2. **Id

1. **State the problem:** We are given the distance function for a coin dropped from a tall building as $$D = 9.8t^2$$ where $$D$$ is the distance in meters and $$t$$ is the time i

1. Let's clarify the problem: You want to understand how gravitational influence works over large distances, such as from the center of our galaxy to Earth, or from Earth to a very

1. Let's start by stating the problem: You want to express your theory that gravity is behind dark matter and dark energy in mathematical equations. 2. Gravity is classically descr

1. **State the problem:** We have forces of magnitudes 2N, 4N, 6N, 1N, and 5N acting along the sides AB, BC, CD, DE, and EA respectively of a rectangular pentagon with side length

1. **State the problem:** We need to find the magnitudes of the force components $u$ and $v$ given a force of 300 N acting at angles 30° with the horizontal axis $u$ and 15° with t

1. The user has requested a physics graph related to the function $y=SEFTPhysics graph please$. 2. This appears to be a request for a graph rather than a specific algebraic or phys

1. The problem asks which graph(s) can represent a journey from point P to point Q based on distance vs. time graphs. 2. A journey from P to Q means distance should start at P's di

1. **State the problem:** Khalid drives from home to a hotel with a displacement–time graph given. We need to find: a) The displacement of the hotel from Khalid's home.

1. **Problem Statement:** I) Choose the correct option: When the distance between a planet and the Sun decreases, what happens to the gravitational pull?