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See a solved example at Buzztutor. Power Power P is work W done in unit time t.

Physics tutor

However in physics we use Watt. So the first thing to do in solving any problem related to power is to convert horsepower to Watts. Johannes Kepler, after a detailed analysis of the measurements announced three laws in The orbit of each planet is an ellipse which has the Sun at one of its foci.

Each planet moves in such a way that the imaginary line joining it to the Sun sweeps out equal areas in equal times. The squares of the periods of revolution of the planets about the Sun are proportional to the cubes of their mean distances from it.

Newton's law of universal gravitation About fifty years after Kepler announced the laws now named after him, Isaac Newton showed that every particle in the Universe attracts every other with a force which is proportional to the products of their masses and inversely proportional to the square of their separation.

If F is the force due to gravity, g the acceleration due to gravity, G the Universal Gravitational Constant 6. The formula for finding out the acceleration due to gravity at this point becomes: Properties of Matter The mass of a substance contained in unit volume is its density D. Water is used for this purpose.

The ratio of the density of the substance to that of water is called the pecific Gravity SG S of the substance. You would require J of heat to raise the temperature of water by 1 degree Celsius.

On the other hand 1 kg of copper would zoom to this temperature after it receives only J of heat. It is known that every substance has a unique value of amount of heat required to change the temperature of 1 kg of it by 1 degree Celsius. This number is referred to as the specific heat of the substance.

Let Q be the heat transferred to m kg of a substance, thereby changing its temperature by dT. This is given by.

Here m, mass of water is 0.I'm currently pursuing an electrical and computer engineering degree at the University of Utah. I have over 10 years of experience tutoring students in calculus, algebra, computer science, and physics. A-Level physics lessons are challenging and many students find that the help of a private A-Level physics tutor can ensure they achieve their desired grades as well as easing them through the exam period.

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