Radiation is energy emitted from a radiation source in the form of waves or particles. Considered in Hz = 1 / s (s = second). Example: a cork on top of a wave 15/10s = 1.5 / 1s = 1.5 1 / s = 1.5 s-1 = 1.5 Hz. Wavelength: The wavelength is the distance … Read more

Physics

Posted in Physics on the 04.02.2012

Speed formula: V = s / t Only by constant speed Area can be used to found the stretch, only if the speed is constant time along the x – axis, while the speed along the y – axis Instantaneous Speed: Tangent function, and then type x `one that one will find Acceleration: The speed … Read more

Physics – Electricity

Posted in Physics on the 04.02.2012

+ / – An object that is negatively charged, the surplus of electrons An object is positively charged, the loss of electrons The conservation law of electric charge Electric charge can neither be created nor destroyed The total charge is conserved in all physical processes Electric current: Transported charge per time Measured A Voltage: Work … Read more

Physics – Astrophysics

Posted in Physics on the 04.02.2012

HR – diagram: An aid to understanding how stars evolve Located on the basis of surface temperature and the radiated power Most of the stars are located along the main series Star Birth: If a mist that comes from a high density in one place If the fog becomes larger and have large enough mass … Read more

Physics – Nuclear Physics

Posted in Physics on the 04.02.2012

Isotope / isotope atoms: Atoms of the same element have the same number of protons, but in some n√łytrontallet will vary. Such an atom is an isotope. Copy iodine Atomic mass unit u = 1.66 * 10 ^ -27 Must occasionally find plenty of physics table in this chapter Binding Energy: The minimum energy needed … Read more

Physics – Waves, Sound and Light

Posted in Physics on the 04.02.2012

Fluctuations: A periodic motion between two extreme positions Equilibrium Position: Where the lot is when it is at rest Amplitude: The maximum positive effect Frequency: The number of cycles per time. A high frequency corresponds to a small period of time Resonance: When an oscillating system is affected by a periodic force with the same … Read more

Physics – Thermal Physics

Posted in Physics on the 04.02.2012

Pressure: Measured in Pascals, Pa Pressure into a pin, works direction in both directions Gas pressure is caused by molecules that collides with the wall of the container Internal energy: The internal energy of a substance is the sum of the internal kinetic energy and the internal potential energy Kinetic energy is related to temperature, … Read more

Physics – Mechanical Energy

Posted in Physics on the 04.02.2012

Energy: Can not be created, can not disappear Can only transformed or transferred The total energy is conserved in all physical processes that we know Work in general: When the power and road have the same direction, we must take into account the angle between the movement and power When the angle = 0, the … Read more

Physics – Atomic Physics

Posted in Physics on the 04.02.2012

The spectrum You get a spectrum by eg sending white sunlight onto a CD – ROM Emission lines and absorption lines: An element that can emit light with a certain length, can also absorb light with the same wavelength A spectrum of bright emission lines, we call for an emission spectrum Dark lines in a … Read more

Physics – Motion (with examples)

Posted in Physics on the 04.02.2012

1C) Second-time where a certain number fluctuations in a particular radiation fa cesiumatomet Cs-133. Meter-The stretch of light moving in an empty room during a certain fraction of the century a number. Uncertainty: If you eg are 172cm high, one is between 171.5 and 172.5 cm. Uncertainty you write to: 172 + -0.5 cm Size: … Read more

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