The aim of this question is to understand the basic working principle of the electrostatic precipitator by applying the key concepts of static electricity including electric field, electric potential, electrostatic force, etc. Electrostatic precipitators are used to remove undesired particles (especially pollutants) from smoke or effluent gases. They are used mostly in coal-powered power plants […]

# Category Archives: Physics Q&A

This circuit is made up of two wires and two batteries. All components are connected in series such that the positive terminal of battery # 2 is electrically connected to the negative terminal of battery # 1. A steady current flows through this circuit. Each battery has an emf of $ 1.3 $ volts Each […]

This problem aims to familiarize us with different state laws of physics and chemistry involving temperature, volume, and pressure. The concepts required to solve this problem include Boyle’s law, the ideal gas law, and work done using polytropic processes. First, we will look at Boyle’s law, which is a practical gas law that defines how the […]

The aim of this problem is to find the entropy generation value of an adiabatic process in which nitrogen is compressed at a given temperature and pressure. The concept required to solve this problem is related to thermodynamics, which includes the entropy generation formula. In general terms, entropy is described as a standard of randomness […]

– The radius of the earth is measured to be $6.37times{10}^6m$. It completes one rotation around its orbit in $24$ hours. – Part (a) – Calculate the angular speed of the earth. – Part (b) – If the rotation of the earth is viewed from a location above the north pole, will the angular velocity […]

This question aims to find the value of the smallest angle theta can make with a rope without breaking it by using laws of motion. Consider a box of sweets weighing down the rope when people from across the buildings are sending this box. People from one building are sending this box of sweets to […]

(a) Write but do not solve the differential equation for the instantaneous velocity $v$ of the ball in terms of time, given quantities, quantities, and fundamental constants. (b) Determine the final velocity $vt$ intervals of the given quantities and basic constants. The article aims to find the differential equation of instantaneous velocity and terminal velocity. This article uses the […]

This article aims to find the moment of inertia in the given system. The article uses the concept of Newton’s second law for rotational motion. -Newton’s second law for rotation, $ sum _ { i } tau _ { i }= I alpha $, says that the sum of torques on a rotating system about a […]

– Acceleration. – Velocity. – Speed. – All of the above. Choose the correct option from the given choices. The main objective of this question is to choose the correct option from the given options when you apply double force on an object. This question uses the concept of Newton’s second law of motion. Newton’s […]

The aim of this question is to find the change in speed of two bodies after collision by utilizing the concept of elastic collisions. Whenever two bodies collide, their momentum and energy remain constant as per the energy and momentum conservation laws. Based on these laws we derive the concept of elastic collisions where the […]

Determine the following quantities: – The horizontal and vertical components of the velocity vector. – The maximum height reached by the projectile above the launch point. The aim of this question is to understand the different parameters during 2D projectile motion. The most important parameters during the flight of a projectile are its range, time […]

– Thermal energy is generated at a rate of $1200W$ when a student weighing $70-kg$ is running. – This thermal energy must be dissipated from the body through perspiration or other processes to maintain the body temperature of the runner at a constant $37 ^{ circ }C$. In the event of failure of any such […]

This problem aims to find the refractive index of a prism having angles of $30space60$ and $90$ degrees. The concepts required to solve this problem are related to snell’s law and the index of refraction. Now the refractive index is defined as the ratio of the speed of light in any medium (e.g. water), to […]

The aim of this question is to understand the key concepts of speed, frequency, wavelength, and tension in a string. Whenever energy is transferred from one place to another through the successive vibratory motion of particles, this form of energy transferring agent is called a wave. All type of waves have some common properties such […]

This question aims to find the angular speed of the tires of the bicycle and the speed of the blue dot painted on the tires of 0.8m diameter. A bicycle is coasting on a level road at a speed of 5.6 m/s. The tires of this bicycle have a diameter of 0.80 m and a […]

This question aims to find the frequency distribution of the qualitative data by using knowledge of the frequency distribution. Frequency distribution is a representation of several observations in a tabular form. It displays information within the given intervals. A frequency distribution shows the number of repeated items in a tabular or descriptive form. It can be […]

This question aims to find the near point and far point of Rachel when she wears +2.0 D reading glasses. Rachel has a good distant vision but she has a touch of presbyopia. Her near point is 0.60 m. The maximum distance at which the eyes can see things properly is called the far point […]

This question belongs to the physics domain and aims to explain the concepts of velocity, velocity field, and flow field. Velocity can be described as the rate of transformation of the object’s position concerning a frame of concern and time. It sounds complex but velocity is essentially speeding in a particular direction. Velocity is a […]

This question aims to find the angle between the electric field and the axis of a filter when a polarized light wave passes through the polarizing filter. The property of the electromagnetic radiation passing through a polarizing filter in a certain direction having a magnitude of vibrating electric field is called polarization. The light waves […]

There is a binary star system comprising of a pair of stars with masses denoted by $ m_1 $ and $ m_2 $ and centripetal acceleration denoted by $ a_1 $ and $ a_2 $. Both the stars, while attracting each other, circulate around a center of rotation of the combined system. This question aims […]

The aim of this question is to understand and apply Newton’s laws of motion to moving objects. According to Newton’s motion laws, a body can’t just move by itself. Instead, an agent called the force acts on a body to move it from rest or to stop it. This force causes the change in speed, […]

The main objective of this question is to find the power dissipated in each bulb that is connected in series. This question uses the concept of power in series. In a series circuit, the total power is the same as the total amount of power lost by each resistor. Mathematically, it is represented as: [ […]

– $ space a space = space (4, space 7, space -4), space b space = space (3, space -1, space 1) $ The main objective of this question is to find the scalar and vector of one vector onto the other vector. This question uses the concept of vector and scalar projection. A vector […]

This question aims to develop an understanding of the power generation capacity of a wind turbine generator. A wind turbine is a mechanical device that converts the mechanical energy (kinetic energy to be precise) of the wind into electrical energy. The energy generation potential of a wind turbine depends upon the energy per unit mass […]

This question aims to develop a practical understanding of Newton’s laws of motion. It uses the concepts of tension in a string, the weight of a body, and the centripetal/centrifugal force. Any force acting along a string is called the tension in the string. It is denoted by T. The weight of a body with […]

A car with mass mc=1074kg is traveling west through an intersection at a magnitude of veloctiy of vc=15m/s when a truck of mass mt=1593 kg traveling south at vt=10.8 m/s fails to yield and collides with the car. The vehicles become stuck together and slide on the asphalt, which has a coefficiet of friction of […]

The main objective of this question is to find the wavelength of light which is related to the electron transition when it jumps from lower energy state to higher level of energy.This question uses the concept of the wavelength of light. The distance between the two subsequent crests or troughs is known as the light […]

The aim of this article is to find the Kinetic Energy of an object in motion in $BTU$. The basic concept behind this article is the understanding of Kinetic Energy K.E. and its unit conversion. Kinetic Energy is defined as the energy that an object carries while in motion. All moving objects possess kinetic energy. […]

This article aims to find the electric flux in a cube having six sides. This article uses the concept of electric flux. For a closed gaussian surface electric flux is given by the formula [Phi_{e} = dfrac{Q}{xi_{o}}] Expert Answer Consider a cube having side length $ L $ in which a size $ q $ charge is placed at […]

Write an expression from the given data to calculate the mass of the planet concerning G and the variables given in the statement. Also calculate the mass of the planet in Kg if T=26 hours and R=2.1X10^8m. This problem aims to familiarize us with the objects revolving around a specific pivot point. The concepts required to solve this problem are mostly […]

[ v_x(t) = ( 2.60 cm/s) sin big[ ( 4.63 rad/s ) t – (pi/2) big] ] The Period The Amplitude Maximum Acceleration of the Mass Force Constant of the Spring The question aims to find the period, amplitude, acceleration, and force constant of the spring of a mass attached to a spring. The question […]

This question aims to study the effect of material on the wave speed when it travels from one material to another. Whenever a wave strikes the surface of another material, a part of it is bounced back into the previous medium (called reflection phenomenon) and a part of it enters into the new medium (called […]

– A railway station has a loading yard for goods transport, a small 0.2kg documents package is released from rest to a point A on a booking place which is one-quarter of a circle having the radius of 1.6 m. The package size is much smaller compared to a radius of 1.6 m. Therefore, the […]

a(t)= 2i+2kt, v(0)=3i-j, r(0)=j+k This question aims to find a particle’s velocity and position vector with some acceleration, initial velocity, and position vectors. A position vector helps us find one object’s position relative to another. Position vectors normally start at the origin and […]

Calculate the potential difference existing between the plates of the capacitor. Keeping the charge constant on each plate of the capacitor, calculate the impact of doubling the separation between capacitor plates on the potential difference. Calculate the amount of work that will be required to double the separation between the capacitor plates. The aim of […]

If the spheres repel each other with a repulsive force having a magnitude of 3.33X10^(-21) N, calculate the excess electrons that each sphere carries. This question aims to find the number of excess electrons present on a set of bodies that causes them to repel each other. The basic concept behind this article is the […]

This problem aims to familiarize us with different circuital laws and circuit analysis. The concepts required to solve this problem are related to Kirchoff’s circuit laws, which include Kirchoff’s first law, known as the current law, and Kirchoff’s second law, known as the voltage law. In circuit analysis, Kirchhoff’s circuit laws help to form an […]

If the coefficient of kinetic friction of their bodies with the floor is 0.250, how far do they slide? The question aims to understand newton’s law of motion, the law of conservation, and the equations of kinematics. Newton’s law of motion states that the acceleration of any object relies on two variables, the mass of […]

A light beam whose wavelength $lambda$ is 550nm is passing through a single slit having a width of the slits equals to 0.4mm and hits a screen that is placed 2m away from the slit. This question aims to find the width of the central bright fringe of the light that is passing through a […]

This question aims to find the acceleration of the block attached to a spring that is moving along a frictionless horizontal surface. This block follows the simple harmonic motion along the horizontal direction. Simple harmonic motion is the type of “to and fro” motion in which the object displaced from its mean position by an acting […]

The main objective of this question is to resolve the given vector into its component and determine its magnitude. This question uses the concept of Vector resolution. A vector resolution is the breaking of such a single vector into several vectors in various directions that collectively generate the same effect as a single vector. Component […]

This question aims to find the speed of the block when it gets released from its compressed state. The spring of the block is compressed by length delta x from its initial length $x_o$. The tension and compression present in the spring obey Hooke’s law which states that the minor displacements in the object are […]

The aim of this question is the application of the energy conservation law (kinetic energy and potential energy). From the definition of the energy conservation law, any form of energy can neither be destroyed nor created. However, energy may be interconverted between its different forms. The kinetic energy of a body denotes the energy it possesses […]

This problem aims to find the length of a rough patch using the concept of the work-energy theorem and the Principle of Energy Conservation. It also covers the study of the non-conservative force of friction between ice and skates. The most important concept discussed here is the work-energy theorem, most commonly known as the principle of […]

– A conducting sphere with a hollow cavity inside has an outer radius of $0.250m$ and an internal radius of $0.200m$. A uniform charge exists on its surface having a density of $+6.37times{10}^{-6}dfrac{C}{m^2}$. Inside the cavity of the sphere, a new charge having a magnitude of $-0.500mu C$ is introduced. – (a) Calculate the new […]

The period of the asteroid is assumed to be $5$ Earth Years. Calculate the speed of the asteroid and the radius of its orbit. The aim of this article is to find the speed at which the asteroid is moving and the radius of its orbital movement. The basic concept behind this article is Kepler’s […]

If she walks at $3, mi/hr$ and rows at $2, mi/hr$, at which point on the shore should she land to minimize the total travel time? If she walks at $3, mi/hr$, what is the minimum speed at which she must row so that the quickest way to the restaurant is to row directly (with […]

what is the speed of the rock when the string passes through the vertical position? what is the tension in the string when it makes an angle of $45$ with the vertical? what is the tension in the string as it passes through the vertical? The purpose of this question is to find the speed […]

The idea of this question is to find the electric potential between two charges given some conditions. The electric potential is regarded as the small amount of energy required for one unit of charge for a test charge such that the disruption of the field taken can be neglected. Its magnitude is determined by the amount […]

This question aims to find the atmospheric pressure given the depth of a point. The pressure of the atmosphere on the surface is defined as atmospheric pressure. It is measured in atm (atmosphere), whereas at the sea level, the average pressure is taken to be $1$ atm. It is also known as barometric pressure or […]