🔭 physics

1. **State the problem:** We need to find how many pieces of briquette are required to provide 80 MJ of energy, given the briquette's shape and energy density.

1. The problem is to use the value $g=10$ in calculations involving gravitational acceleration. 2. The formula for gravitational force or weight is $F=mg$, where $m$ is mass and $g

1. **Problem Statement:** We have two particles projected vertically upwards:

1. **State the problem:** We have a jetliner with mass $m=3.30\times10^{5}$ kg moving at initial speed $v_0=27.0$ m/s. A net braking force $F=4.3\times10^{5}$ N slows it down. We w

1. **State the problem:** We have two cars, car #1 and car #2. Car #1 has four times the mass of car #2, but both have the same kinetic energy. The speed of car #2 is $v$. We need

1. **State the problem:** A rock is thrown vertically upward with an initial velocity of $20$ m/s. It eventually falls into a hole $10$ m deep. We need to find:

1. **State the problem:** Convert a speed of $90$ nmils per hour to meters per second. 2. **Understand the units:**

1. **State the problem:** We need to find the spacing between adjacent bright fringes in a double-slit experiment. 2. **Formula used:** The fringe spacing $\Delta y$ is given by th

1. **State the problem:** You need to find the power of the lens required to correct farsightedness given that the near point is at $35$ cm instead of the normal $25$ cm. 2. **Form

1. **State the problem:** We are given the potential energy ($$PE$$) and total energy ($$E_{total}$$) of an object at point A, and we need to find its kinetic energy ($$KE$$).

1. **State the problem:** We need to find the potential energy of an object of mass $4.0$ kg at point A, where the height is approximately $7.5$ m. 2. **Formula for potential energ

1. **State the problem:** We need to find the force $F$ required to accelerate a satellite with mass $m = 6.02 \times 10^4$ kg at acceleration $a = 8.3 \times 10^{-2}$ m/s$^2$ usin

1. **Problem Statement:** We are given three primary colors Red (R), Green (G), and Blue (B) used in additive color mixing. The secondary colors Yellow (Y), Cyan (C), and Magenta (

1. **Problem Statement:** Interpret the intervals $C$, $D$, and $E$ on a speed vs. time graph and compare intervals $B$ and $F$. Also, conclude about distances traveled during thes

1. **State the problem:** We have two boxes, A and B, connected by a rope on a frictionless surface. Box B is pulled to the right with a force of $60$ N. We need to find the accele

1. **State the problem:** We have two radioactive isotopes $X$ and $Y$ with half-lives $T_{1/2,X} = 2$ days and $T_{1/2,Y} = 3$ days respectively.

1. **State the problem:** We need to find the magnitude of the force $F$ when the spring stores $0.015$ J of energy. 2. **Recall the formula for energy stored in a spring:**

1. **Problem Statement:** A heater with resistance $8.0\Omega$ is connected in series with a variable resistor and a DC power supply. The current through the circuit is $0.50A$. We

1. **State the problem:** We have three frequencies $440$, $880$, and $1320$ Hz with corresponding amplitudes $0.72$, $0.41$, and $0.25$. The beats per minute (bpm) is $76$, and th

1. **Problem Statement:** Find the potential $u(r, \phi)$ inside a sphere of radius $R=1$ where there are no charges inside, so $\nabla^2 u = 0$, and the potential on the surface o

1. Problem ko samajhte hain: Aap pooch rahe hain ki time travel kis subject mein aata hai - chemistry, biology, ya physics. 2. Time travel ka concept mainly physics mein aata hai,