High School Physics

# Numericals_21

## Numerical problems on Echo of sound

Question 1: A person clapped his hands near a cliff and heard an echo after 2 seconds. What is the distance of the cliff from the person if the speed of the sound, v is taken as 346 m/s? Solution: Given,Speed of sound, v = 346 m/sTime taken to hear the echo, t = 2 […]

## Calculate the magnetic field at the center of a square loop of side 10 cm carrying a current of 5A.

Problem statement: Calculate the magnetic field at the center of a square loop of side 10 cm carrying a current of 5A. Solution: Given: Square loop’s side: a= 10 cm = 0.1 mcurrent I = 5 AThe magnetic field at the center of this square: B =? The formula of the magnetic field B at the center […]

## Find the magnetic field at a distance of 20 cm from a long, straight wire carrying a current of 10A.

Problem Statement: Find the magnetic field at a distance of 20 cm from a long, straight wire carrying a current of 10A. Solution: Given: current I =10 Adistance r = 20 cm = 0.2 mMagnetic field B =?We know, μ0=4π x 10-7 The magnetic field at a distance r from a long, straight wire carrying […]

## Calculate the magnetic field at point P located on the axis at a distance of 10 cm from the center of a circular wire of radius 5 cm carrying a current of 5 A.

Problem statement: Calculate the magnetic field at point P located on the axis at a distance of 10 cm from the center of a circular wire of radius 5 cm carrying a current of 5 A. Solution: Given: radius of circular wire: a = 5 cm = 0.05 mcurrent I = 5 AOn the axis, […]

## Biot-Savart Law Numericals

Physics Numerical Problems Based on Biot Savart Law – The Biot-Savart law is a fundamental relationship in magnetostatics. It describes the magnetic field generated by a steady current. In this post, we will look at a set of numerical problems based on the Biot-Savart law and their step-by-step solutions. Formulas Used The Biot-Savart law allows […]

## Class 9 Physics Work and Energy Numericals

In this post, we have a set of Class 9 Physics Work and Energy Numericals with solutions. We will first see a list of formulas, and then we will solve a set of work and energy numericals.

## Linear Expansion of Solid Numericals Class 8

The linear expansion of a solid is an increase in the length of a wire or a rod of a solid due to an increase in its temperature. In this post, we will study related formulas and solve a numerical problem based on this the linear expansion of a solid.

## Temparature conversion Numericals class 8

In this post, we will solve a few selected Numericals based on temperature conversion formulas. Now, let’s find the required formulas first.

## Floatation Class 9 Numericals

In this post, you will find a set of Numericals on Floatation for class 9. You may note the formulas that are used to solve these Floatation class 9 Numericals. [selina class 9 questions – sol credit knowl + edge + boat+ .+ c o m

## Numericals of Light Class 10

In this post, you will find a set of Numericals of Light for Class 10. The solutions are given as well that would help you to get a good grasp on this important chapter of class 10 physics.

## Force Numericals Class 8

In this post, we will solve a set of Force Numerical problems for class 8 students.

## Potential Energy Numericals Class 9

Potential Energy Numericals Class 9

## Kinetic Energy Numericals Class 9

Kinetic Energy Numericals Class 9

## In the circuit, the high-resistance voltmeter reads 1.55 V when the switch is open and 1.49 V when the switch is closed. (internal resistance practice problem Q1 solved)

In the circuit in the Figure below, the high-resistance voltmeter reads 1.55 V when the switch is open and 1.49 V when the switch is closed. (1) Explain why:(a) the e.m.f. of the cell can be considered to be 1.55 V(b) the voltmeter reading drops when the switch is closed.(2) Calculate the internal resistance of […]

## In the Figure below the teeth of the gear wheels exert a force of 250 N on each other. The radius of the smaller wheel is 10 cm, and the larger wheel has a radius of 20 cm. a) Calculate the turning moment produced by each wheel.

In the Figure below the teeth of the gear wheels exert a force of 250 N on each other. The radius of the smaller wheel is 10 cm, and the larger wheel has a radius of 20 cm. a) Calculate the turning moment produced by each wheel.

## Machine Numericals Class 10 ICSE

Machine Numericals Class 10 ICSE – In this post, we will solve a set of selected Numericals based on the Machines chapter from the class 10 physics syllabus of ICSE.

## Numericals on Moment of Force class 10

In this post, we will solve a few selected Numericals on Moment of Force for class 10. We have another post on Force Numericals for class 10 where you will find more such numericals to solve.

## ICSE Physics Class 10 Force Numericals

In this post, we will solve a set of numerical problems based on force, and moment of force from the syllabus of class 10 Physics of ICSE board.

## A 1500 kg car has a front profile that is 1.6 m wide by 1.4 m high and a drag coefficient of 0.50. The coefficient of rolling friction is 0.02. What power must the engine provide to drive at a steady 30 m/s if 25% of the power is lost before reaching the drive wheels?

Numerical Question on friction and air drag: A 1500 kg car has a front profile that is 1.6 m wide by 1.4 m high and a drag coefficient of 0.50. The coefficient of rolling friction is 0.02.
What power must the engine provide to drive at a steady 30 m/s if 25% of the power is “lost” before reaching the drive wheels? – solved here

## A factory uses a motor and a cable to drag a 300 kg machine to the proper place on the factory floor. What power must the motor supply to drag the machine at a speed of 0.50 m/s? The coefficient of friction between the machine and the floor is 0.60.

A factory uses a motor and a cable to drag a 300 kg machine to the proper place on the factory floor. What power must the motor supply to drag the machine at a speed of 0.50 m/s? The coefficient of friction between the machine and the floor is 0.60. – solved

## A block of mass 0.500 kg slides on a flat smooth surface with a speed of 2.80 m/s. It then slides over a rough surface with μk and slows to a halt. While the block is slowing,.. [Friction numerical]

A block of mass 0.500 kg slides on a flat smooth surface with a speed of 2.80 m/s. It then slides over a rough surface with μk and slows to a halt. While the block is slowing,

(a) what is the frictional force on the block?

(b) What is the magnitude of the block’s acceleration?

(c) How far does the block slide on the rough part before it comes to a halt?

## A 4000 kg truck is parked on a 15 degrees slope. How big is the friction force on the truck? [Friction Numerical]

A 4000 kg truck is parked on a 15 degrees slope. How big is the friction force on the truck? [Friction Numerical]

## A smooth wooden 40.0 N block is placed on a smooth wooden table. A force of 14.0 N is required to keep the block moving at constant velocity. (a) What is the coefficient of sliding friction between the block and the tabletop? (b) If a 20.0 N brick is placed on top of the wooden block, what force will be required to keep the block and brick moving at constant velocity?

A smooth wooden 40.0 N block is placed on a smooth wooden table. A force of 14.0 N is required to keep the block moving at constant velocity.
(a) What is the coefficient of sliding friction between the block and the tabletop?
(b) If a 20.0 N brick is placed on top of the wooden block, what force will be required to keep the block and brick moving at constant velocity?

## If the coefficient of sliding friction between a 25 kg crate and the floor is 0.45, how much force is required to move the crate at a constant velocity across the floor? [Friction Numerical]

If the coefficient of sliding friction between a 25 kg crate and the floor is 0.45, how much force is required to move the crate at a constant velocity across the floor?

## A 52 N sled is pulled across a cement sidewalk at a constant speed. A horizontal force of 36 N is exerted. What is the coefficient of sliding friction between the sidewalk and the metal runners of the sled? [Friction Numerical]

Numerical Question: A 52 N sled is pulled across a cement sidewalk at a constant speed. A horizontal force of 36 N is exerted. What is the coefficient of sliding friction between the sidewalk and the metal runners of the sled?

## Mass and Weight Numericals Class 9

In this post, we will solve mass and weight numericals based on the class 9 science (physics) syllabus. These numerical questions are based on the concepts of mass and weight and their relationship. Formulas Used 1) weight of a body = mass of that body x acceleration due to gravity at that locationW =mg2) Mass […]

## Electricity class 10 Questions and Answers

In this post, you will find a set of selected questions and answers from the class 10 electricity chapter. This set consists of theoretical questions and numerical problems.

## Electricity Numericals class 10 worksheet

In this post, you will find a Worksheet based on the Electricity Numericals for class 10 applicable for different boards like CBSE, ICSE, and other state boards. The problems are solved as well.

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## Electricity class 10 numericals

In this post, we will solve a set of Electricity class 10 Numericals. These numerical problems with the solution will be a real help for the students preparing for the class 10 examination (CBSE, ICSE, & State boards). First, find the list of formulas from the electricity chapter. And, then find the solved numerical questions.

## An object is thrown vertically upward and returns after 10 seconds. Find the initial velocity and its maximum height.

An object is thrown vertically upward and returns after 10 seconds. Find the initial velocity and its maximum height.

## Numericals on Second Law of Motion class 9

In this post, we will solve numerical problems based on Newton’s Second Law of Motion. Basically, these problems will be solved with the help of the equation of force in terms of the mass and acceleration of a body, that comes from the second law of motion. This set of numerical questions is good for class 9 students.

## Numericals on Density & Relative Density Class 9

This post is on Numericals on Density & Relative Density for Class 9.

## Free Fall Numericals class 9

In this post, we will solve a set of Numericals based on the free fall of the class 9 science syllabus. First, we will list down the formulas of free fall and then solve the numerical problems related to free fall.

## Conservation of Energy problems [ numerical problems solved]

In this post, we will list and solve a set of Conservation of Energy problems. These are basically numerical problems that need to be solved using the principle of Conservation of Energy.

## Wave Equation Numericals

In this post, we will solve a set of Wave Equation Numericals using the wave equation itself. Wave Equation Numericals – solved Here, we will go through the equation that is used to solve the numerical problems given in this post. Then we will solve the wave equation numericals one by one. Wave Equation Numericals […]

## Magnetic Moment Numerical class 12 solved

In this post, we have solved physics numerical on the magnetic moment. This is good for class 12. The magnetic moment formula is used. refer: Magnetic moment formula Question 1] A bar magnet is placed flat on a flat table, with an applied magnetic field moving upwards through the table, meaning the field is perpendicular […]

## Numerical based on Lens Makers’ equation – solved

In this post, we will solve numerical problems based on Lens Makers’ Equation. Here is our post on the equation used here which you can read: Lens Makers’ equation. Numerical based on Lens Makers’ equation – with solution A dense glass double convex lens [n =2] designed to reduce spherical aberration has |R1|:|R2|=1:5. If a […]

## Real and Apparent depth Numerical problem – solved

Let’s solve a numerical based on real depth, apparent depth, and refractive index. Also, you will get to know about the RI formula to be used to solve this. Real and Apparent depth Numerical problem – with solution Question 1] A crane flying 6 m above a still, clear water lake sees a fish underwater. […]

## Force Numericals

Newton’s second law of motion provides us with the formula of force. We will use different forms of this formula in this post to solve a set of Numerical Problems on Force.

## 1.0 kg of water is contained in a 1.25 kW kettle. Calculate the time taken for the temperature of water to rise from 25° C to its boiling point 100° C.

Calorimetry Numerical Question: 13 [ Reference: Selina Class 10 ICSE physics book exercise] 1.0 kg of water is contained in a 1.25 kW kettle. Calculate the time taken for the temperature of water to rise from 25° C to its boiling point 100° C. Specific heat capacity of water = 4.2 J g-1 K-1. Solution: Specific […]

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