Class 11

The centre of mass (COM) of a system refers to the point that represents the average position where the entire mass of the system is considered to be concentrated. The concept helps in analyzing the motion of a system of particles. Following is the formula to determine the COM of two or more particles:

In this formula,  m1, and m2 stand for masses and r1, r2 are their respective positions. COM motion follows Newton's law which says that if no external force acts on a system, COM moves with uniform velocity.

AMU entrance exam in Science is conducted by Aligarh Muslim University each year through an offline paper.You need have good indepth knowledge of concepts in physics, chemistry and maths . Talking about the paper  pattern it consists of 100 marks paper in objective type questions having 30 marks of maths ,20 marks of chemistry,20 marks for physics,10 marks of  biology and 20 marks of general studies (General knowledge, Indo islamic cultural).Go through the pyq and practice concepts you would surely be able to ace this exam

With your 73.4% in the 10th board exam, you're eligible for a commerce stream in many schools in Jabalpur. Here are some suggestions for schools offering commerce, considering your location:

Schools in Jabalpur with Commerce Stream:

Jabalpur Public School:

Known for its strong academic foundation, this school offers a commerce stream and has a good reputation in the city.

St. Mary's School:

This school is a well-established institution with a commerce stream, known for its discipline and focus on academics

In Physics, Power is the rate at which work is done or energy gets transferred per unit time. It is expressed by the following formulae:

P stands for power, W is for work, t is for time. Power is measured in unit Watt (W) where 1 watt = 1 joule per second. Another unit which is commonly used to measure the power is horsepower (hp), 1hp =746 W.
Power at a specific moment is instantaneous and over a period it is average. 

The work-energy theorem in Physics Work, Energy and Power refers to that net work done on an object is equal to its change in kinetic energy. The following is the formula:

Work-energy theorem means that when work is done on an object, the object gains kinetic energy and when an object does the work, it loses kinetic energy. This theorem helps in solving problems related to motion and forces without directly using kinematic equations. It is especially useful in conservative and non-conservative forces cases and it helps in simplifying complex motion analysis.

Energy in Physics means the ability to do work and it can exist in different forms:

• Kinetic Energy (? ) – It is the energy of a moving object. The formulae are KE=1/2mv2
• Potential Energy (PE) - It is stored energy due to position. Formulae are PE=mgh for gravitational potential energy.
• Mechanical Energy - Total of KE and PE.
• Thermal Energy - Energy generated due to heat.
• Chemical Energy - Energy stored in chemical bonds.
• Nuclear Energy - Related to atomic nuclei.
• Electrical Energy - Related to electric charges.

There are some career options for pcb students after 12th except medical like zoology Microbiology Biochemistry Environmental and also included Science Genetics Bioinformatics Physiology and that is based on your interest and other particulars