High School Physics + more
Calorimetry numerical Question: 12 [Reference Selina ICSE class 10 book exercise] The temperature of 600 g of cold water rises by 15o C when 300 g of hot water at 50o C is added to it. What was the initial temperature of the cold water? Solution: Mass of hot water (m1) = 300 g Initial Temperature of […]
Calorimetry numerical Question: 11 [reference: Selina class 10 ICSE book exercise] 200 g of hot water at 80o C is added to 300 g of cold water at 10oC. Neglecting the heat taken by the container, calculate the final temperature of the mixture of water. Specific heat capacity of water = 4200 J kg-1 K-1. Solution: Mass […]
In this post and its supporting posts, we will solve a set of Calorimetry Numericals for class 10. The problems are taken from Selina’s ICSE Class 10 Physics book. The solution link after each problem will lead you to the solution to the problem in a new tab of your browser.
Calorimetry Numerical Question: 10 [from Selina ICSE class 10 Physics book exercise] 45 g of water at 50o C in a beaker is cooled when 50 g of copper at 18oC is added to it. The contents are stirred till a final constant temperature is reached. Calculate the final temperature. The specific heat capacity of copper […]
Calorimetry numerical Question: 9 [reference: Selina ICSE class 10 Physics] A mass of 50 g of a certain metal at 150° C is immersed in 100 g of water at 11° C. The final temperature is 20° C. Calculate the specific heat capacity of the metal. Assume that the specific heat capacity of water is 4.2 J g-1 K-1. […]
Calorimetry Numerical Question: 8 [reference: Selina ICSE class 10 Physics] 0.5 kg of lemon squash at 30o C is placed in a refrigerator which can remove heat at an average rate of 30 J s-1. How long will it take to cool the lemon squash to 5o C? Specific heat capacity of squash = 4200 J kg-1 K-1. […]
Calorimetry numerical Question: 7 [reference: Selina class 10 ICSE Physics] An electric heater of power 600 W raises the temperature of 4.0 kg of a liquid from 10.00C to 15.00C in 100 s. Calculate:(i) the heat capacity of 4.0 kg of liquid, and (ii) the specific heat capacity of liquid Solution: Power of heater P […]
Calorimetry numerical Question: 6 [ref: Selina ICSE class 10] Find the time taken by a 500 W heater to raise the temperature of 50 kg of material of specific heat capacity 960 J kg-1 K-1, from 18oC to 38oC. Assume that all the heat energy supplied by heater is given to the material. Solution: Specific heat […]
Calorimetry Numerical Question: 5 1300 J of heat energy is supplied to raise the temperature of 0.5 kg of lead from 20oC to 40oC. Calculate the specific heat capacity of lead. Solution: Given Heat energy supplied = 1300 J Mass of lead = 0.5 kg Change in temperature = (40 – 20)0 C = 200 C = […]
Question: 4 Calculate the amount of heat energy required to raise the temperature of 100 g of copper from 20oC to 70oC. Specific heat capacity of copper =390 J kg-1 K-1. Solution: Given Mass of copper m = 100 g = 0.1 kg Change of temperature △t = (70 – 20)0 C = 500 C = 50 K […]
Question: 3 A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find(i) Heat energy needed to warm it by 15oC, and(ii) Its specific heat capacity in S.I unit. Solution: (i) We know that, Heat energy needed to raise the temperature by 150 C = heat capacity × change in temperature Heat […]
Question: 2 (a)Calculate the heat capacity of a copper vessel of mass 150 g if the specific heat capacity of copper is 410 J kg-1 K-1. (b)How much heat energy will be required to increase the temperature of the vessel in part (a) from 25oC to 35oC? Solution: (a) Given Mass of copper vessel = 150 […]
Question: 1 By imparting heat to a body, its temperature rises by 150C. What is the corresponding rise in temperature on the Kelvin scale? Solution: The size of 1 degree on the Kelvin scale is the same as the size of 1 degree on the Celsius scale. Hence, on both the Kelvin and Celsius scales […]
On this page, you will find a numerical physics worksheet that is based on class 9 Motion numericals. Also, you can see this similar post with solved numerical:101 numericals class 9 physics + motion + physicsteacher.in Class 9 Motion Worksheet 1) In the hare-tortoise race, the hare ran for 2 min at a speed of […]
In this post, we have solved a set of Thrust and Pressure Numericals for class 9. Before that, we will go through the formulas used to solve these force and pressure problems.
This page consists of interesting Numericals of Motion Class 9. These Numericals & questions are based on equations of motion (suvat equations). The solved answers to the Physics Numericals for class 9 motion are provided with step-by-step explanations.
Potential Difference Numerical problems – In this post, we will solve selected numerical problems on Potential Difference (PD). To solve these PD numericals we will use concepts and formulas of electric potential and PD.
how to solve a set of p=iv practice problems or p=iv problems using the electric power formulas (P = IV and P = I2R). numerical, physics
When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point.
In this post, we have presented a collection of numerical problems on Energy Stored in Capacitors in the form of a numerical worksheet. This is good for grade 11 and grade 12 students. Energy Stored in Capacitors – worksheet | numerical problems Q1: A large capacitor has plates with areas of 1.5 m2 that are […]
In this post, we have presented a collection of numerical problems on Parallel-plate capacitors in the form of a numerical worksheet. This is good for grade 11 and grade 12 students. Parallel-Plate Capacitors – worksheet | numerical problems Q1 ) A synthetic sweater becomes statically charged by friction. The sweater and the skin beneath it […]
QUESTION 1A helicopter is flying vertically up at an unknown constant velocity. An object is dropped from the helicopter when it is exactly 88 m above the ground. The object takes 1.5 s to reach its maximum height from the time it was released. Air friction is ignored. 1.1) Calculate the magnitude of the velocity […]
4) A positively charged object Q is placed as shown in the sketch. The potential difference between two points A and B is 4 x 10-4 V. (a) Calculate the change in electrical potential energy of a +2nC charge when it moves from A to B.(b) Which point, A or B, is at the higher […]
3 ) A charge of +5nC is moved by a distance of 4 cm against a uniform electric field of magnitude 2 x 1012 NC-1 from A to B. (a) Calculate the work done in moving the charge from A to B.(b) The charge is now released and returns to A. Calculate the kinetic energy […]
Question 2) In the picture below, X is a small negatively charged sphere with a mass of 10kg. It is suspended from the roof by an insulating rope which makes an angle of 60o with the roof. Y is a small positively charged sphere that has the same magnitude of charge as X. Y is […]
1 ) Determine the electrostatic force and gravitational force between two electrons 1ºA apart (i.e. the forces felt inside an atom) [ here is the complete worksheet: electrostatics worksheet 1 ] Solution: Getting everything into S.I. units: The charge on an electron is 1.6×10-19C, the mass of an electron is 9.11 x 10-31kg, and 1ºA=1 […]
In this post, we publish a worksheet containing a bunch of numerical problems from the Electrostatics chapter of HS physics. This set of Electrostatics Numericals for class 12 includes problems based on Coulomb’s force or electrostatic force, electric field, electric potential, electric potential energy, etc. Links to the solutions to the numerical problems will be found beside every problem. This worksheet is apt for grade 11 & grade 12 (class 11 and class 12) students.
In this post, we will solve numerical problems based on the formula of electric potential difference and mechanical work. Formulas Used The potential difference between two points in a circuit is the electrical energy per unit charge. When this electrical energy is converted into other forms of energy (thermal, light, mechanical, etc.), then it can […]
In this post, we will analyze different scenarios of the motion of a charged particle in an electric field between two parallel plates. Effect of electric fields on the motion of charged particles A charged particle in an electric field experiences a force and therefore tends to accelerate. If the particle is stationary the magnitude […]
Here, we will solve a Numerical problem based on Capillary Rise & Capillarity. Numerical assignment (on Capillary Rise & Capillarity) solved 1) A glass tube of radius 0.4 mm is dipped vertically in the water. Find up to what height, the water will rise in the capillary. If the tube is inclined at an angle […]
In this post, we will solve Numerical problems on electric potential energy. [Electric potential energy is also known as electrical potential energy] Numerical Problem based on electrical potential energy Suppose a charge of 5.60 x 10−3 C is placed at one end of the 8.37 km sandcastle, while an unspecified charge is placed at the […]
Here, we will solve a set of Numerical Problems based on the formula of the electric field between two charged parallel plates. Numerical Problem (Physics) – based on the formula of the electric field between two charged parallel plates 1 ) A cathode-ray-tube (CRT) computer monitor accelerates electrons between charged parallel plates (Figure 1).These electrons […]
In this post, we present images (infographics) that contain a set of Mathematical Formulas. This will be a ready reckoner for educational understanding purposes. Quadratic formula Geometry – (area, volume) Trigonometry Triangle Series expansions Derivatives Integrals Disclaimer: (please let us know if you find any typos or errors. This post and its contents are For […]
In this post, we present an image (infographics) that contains a set of fundamental constants used in Physics and Chemistry with their symbols and values. This will be a ready reckoner for constants and their values. A few such constants available in this infographics are Atomic mass unit, Avogadro’s number, Coulomb constant, Gas constant, Permittivity […]
For very small angles, you can approximate values for the sine, cosine, or tangent. This is useful when calculating the fringe separations in interference patterns. When θ is measured in radians, a small angle segment approximates to s/r where s is the arc length and r is the radius. In other words, for a small […]
Potential difference (Electrical) Worksheet Questions Q1. How much is the work done in moving a charge of 4 C across two points having a potential difference of 24 V? Q2: What is the work done in moving a charge of 2 C from a point at 220 V to a point at 120 V? Q3: […]
In this post, we will cover the definition and formula of the coefficient of restitution. We will also see how types of collision can be determined from the value of the coefficient of restitution. We will also solve a numerical problem using the formula of the coefficient of restitution. What is the Coefficient of Restitution? […]
In this post, we will see how to find out the angle between two vectors. Say A and B are 2 vectors, where A =Ax i + Ay j + Azk and B = Bx i + By j + Bzk If we take the cross product of these 2 vectors, then we can write: […]
This worksheet contains numerical problems on Orbital speed & Escape speed. 1) a) Confirm that the escape speed from the Earth’s surface is 11.2 km s−1.b) Explain why all masses have the same escape speed.c) Determine the escape speed from a planet that had twice the radius of Earth, but the same density. 2) The […]
The Carnot cycle represents the cycle of processes for a theoretical heat engine with the maximum possible efficiency. Such an idealized engine is called a Carnot engine. Here in this post, we present a brief idea of the Carnot cycle processes, Carnot engine efficiency, and also we solve here a numerical problem related to the […]
