1. Copy and complete the sentences.
(a) When a bicycle moves through the _______________, a force of friction acts in the opposite _____________.
This force ______________ the bicycle down.
When a canoe moves through the water, a force of friction acts in the _______ direction.
This ___________ the canoe down.
(b) An ice rink is almost _________________ free. If there was no friction at all, a curling stone would carry on moving at ____________ speed in a ______________ line. It would _____________ stop.
2. What is the resultant force on the sailboard when it is traveling at constant speed?
3. What force balances the air resistance on the moving jet?
4. What is the resultant force on the jet?
5. When was the space probe Voyager 1 launched?
6. How fast is Voyager traveling away from the Sun?
7. Voyager has no engine, so why does it keep moving?
8. Explain why Voyager is now moving in an almost straight line.
James Clerk Maxwell (1831 - 1879)
Maxwell did revolutionary work on electricity and magnetism and on the kinetic theory of gases
Niels Bohr (1885-1962)
Bohr introduced the theory that electrons travel in an orbital path around the atom's nucleus. He also theorized that light could have properties of both a wave and a particle at the same time.
Ernest Rutherford (1871-1937)
He is considered the father of nuclear physics because of his discoveries on atomic structure. Rutherford believed that an atom is like a small planetary system, with the protons and neutrons in the center (like the sun), circled by electrons (like planets).
Thomas Alva Edison (1847-1931)
an American inventor of Dutch origin and businessman who developed many devices that greatly influenced life around the world, including the phonograph and a long lasting light bulb.
Johannes Kepler (1571 - 1630)
mathematician and astronomer who discovered that the Earth and planets travel about the sun in elliptical orbits. He gave three fundamental laws of planetary motion. He also did important work in optics and geometry.
Blaise Pascal (1623-1662)
Pascal's work in the fields of the study of hydrodynamics and hydrostatics centered on the principles of hydraulic fluids. His inventions include the hydraulic press (using hydraulic pressure to multiply force) and the syringe.
Alessandro Volta (1745-1827)
inventor of a battery that was the first reliable source of electricity. His name lives on today in the term “volt.”
James Prescott Joule (1818-1889)
English physicist who established that the various forms of energy: mechanical, electrical, and heat - are basically the same and can be changed, one into another. Thus he formed the basis of the law of conservation of energy, the first law of thermodynamics.
Charles-Augustin de Coulomb(1736-1806)
The practical unit of quantity of electricity, the coulomb, is named after him.
André Marie Ampère (1775 - 1836)
Ampère's theory became fundamental for 19th century developments in electricity and magnetism.
James Watt (1736-1819)
The SI unit of power, the watt, is named after him
Georg Simon Ohm (1787-1854)
His study of electric current led to his formulation of the law now known as Ohm's law .
Stephen Hawking
academic celebrity and world-renowned theoretical physicist
Marie Curie (1867-1934)
Nobel Laureate for Physics in 1903, and for Chemistry in 1911
Sir Isaac Newton (1642-1727)
Mathematician and Physicist, one of the foremost scientific intellects of all time.
Prof Dr Abdus Salam (1926-1996)
Nobel Laureate in Physics (1979)
Albert Einstein (1879-1955)
The name "Einstein" has become synonymous with genius.
Physics-3
Physics Laboratory
Physics-2
Physics Club Members
Physics-1
Students at work in the Physics Laboratory
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