🔭 physics

1. **State the problem:** We need to find the amount of heat energy required to raise the temperature of 40 grams of gold from 22°C to 85°C. 2. **Formula used:** The heat energy $Q

1. **State the problem:** We have an object shot vertically from a 100 m high cliff with initial speed 274.4 m/s. Its height at time $t$ seconds is given by $$y = -4.9t^2 + 274.4t

1. Masala: Poyezd 30 minut to‘xtab qoldi va mashinist 80 km masofada tezlikni 8 km/soat ga oshirdi. Poyezd javdal bo‘yicha qanday tezlik bilan yurishi kerak edi? 2. Formulalar va q

1. Poezdning uzunligi 800 m, poezd ustun yonidan 40 s da o’tib ketgan. Tezlikni topamiz. Formulasi: $$v = \frac{s}{t}$$

1. **Problem statement:** Two people are pulling on either end of a rope with forces of 20 N to the left and 30 N to the right. We need to find the resultant force on the rope. 2.

1. **Problem statement:** A ball is subjected to two forces: 20 N upward and 50 N downward. We need to find the resultant force acting on the ball and its direction. 2. **Formula:*

1. **State the problem:** Lee cycles 60 km at 30 km/h and returns 60 km at 20 km/h. We need to find the average speed for the entire journey. 2. **Formula for average speed:** Aver

1. **State the problem:** Lee cycles 60 km at 30 km/h and returns the same 60 km at 20 km/h. We need to find the average speed for the entire journey. 2. **Formula for average spee

1. Let's start by stating the problem: We want to understand the concept of relative speed and how to use it. 2. Relative speed is the speed of one object as observed from another

1. **State the problem:** We are given the sea level pressure 500 km from the hurricane eye as 1000 hPa and the central pressure as 980 hPa. We need to find the wind speed $V$ usin

1. The problem is to understand and use the equation for displacement in uniformly accelerated motion: $$\Delta y = v_i \Delta t + \frac{1}{2} a \Delta t^2$$ 2. This formula calcul

1. The problem is to convert a speed given as 62 feet per 1 second into other units or understand its meaning. 2. Speed is defined as distance divided by time, so the formula is:

1. **State the problem:** Calculate the magnitude of the applied force pushing a 23 kg luggage up a ramp inclined at 15° with kinetic friction coefficient 0.18, given it accelerate

1. **Problem Statement:** A football is punted into the air with height $h$ in meters after $t$ seconds given by the quadratic equation: $$h = -4.9t^2 + 24.5t$$

1. **State the problem:** We need to find the mass of a solid gold sphere with radius $r=7$ cm, given the density of gold is $0.019$ kg/cm³. 2. **Formula for volume of a sphere:**

1. **Problem statement:** A baseball is hit with an initial velocity $v_0=27.0$ m/s at an angle $\theta=30^\circ$ above the horizontal. Find: a) The time the ball is in the air.

1. The problem asks us to determine the value of $a$ in the exponential decay model $$A(t) = A_0 a^t$$ where $A_0$ is the initial amount of radium-223 and $t$ is time in days. 2. T

1. The user asked for "All physics units," which is a broad request covering many physical quantities and their units. 2. Physics units are standardized measurements used to quanti

1. **Problem Statement:** Given points A(6,0,0), B(0,4,12), and C(6,8,6), and the force vector \(\mathbf{F}_{BC} = 1.917\mathbf{i} + 1.278\mathbf{j} - 1.917\mathbf{k} \) kN acting

1. The problem states that the force $f_6$ is equal to 45. 2. Since this is a direct assignment, no further calculation is needed.

1. **State the problem:** We need to find how many degrees Celsius the temperature of mercury must drop to go from room temperature (22°C) to the freezing point of dry ice (–78.5°C