The Physics Of An Experiment

Purpose: To become familiar with the International System of Units and common laboratory equipment and techniques. To learn how to determine volume, mass, length, and temperature of a wide variety of items. To learn how to calculate density and concentration of dilutions.

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

1. Find the westward component of a resultant vector 85.42 unit, 23º W of N.

The purpose of this lab is to test substances and to determine the physical and chemical properties of substances.

In this experiment, the signal generator was set so that the frequency meter showed a reading of 1,803 Hz. The microphone was moved to a distance from the speaker so that the oscilloscope displayed a straight diagonal line. This position was of the microphone was recorded as the initial position, or beginning of a wavelength. The microphone was then moved farther in the same direction until the oscilloscope displays the same horizontal line. This position was recorded as final position, or the end of the wavelength. The distance between the two positions represents one wavelength for this frequency. This was repeated for frequencies of 2,402 Hz, 3,002, Hz, 3,602 Hz, and 4,201 Hz.

Heisenberg realized that the uncertainty relations had profound implications. Heisenberg set himself to the task of finding the new quantum mechanics to explain what his theories observed. He relied on what can be observed, namely the light emitted and absorbed by the atoms. By July 1925, Heisenberg wrote his answer in a paper. The basic idea of Heisenberg's paper was to get rid of the orbits in atoms and to arrive at new mechanical equations. Heisenberg’s approached focused mainly on the particle nature of electrons. The mathematics Heisenberg used were tables commonly used for multiplication of arrays of numbers-mathematical objects known as matrices. Using the mathematics of matrices, scientists had at last a new mechanics for calculating the quantum behavior of particles. Heisenberg, and others showed that the new quantum mechanics could account for many of the properties of atoms and atomic events.

A. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?

Students will carefully observe acts of aggression and prosocial behavior on television, report their observations, and analyze their data to draw conclusions.

C. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide.

Bohr stated that electrons travel only in successively larger orbits. The outer orbits hold more electrons that the inner ones and it's the outer orbits that determine the atom's chemical properties. Although Bohr's model eliminated many problems of earlier renderings, it was not without its own flaws. Bohr's model violated the Heisenberg Uncertainty Principle because it states that electrons have both a known orbit

The results of this experiment proved the plum pudding model of the atom to be incorrect as some of the alpha particles (helium atoms) deflected meaning the atom has a dense centre of positive charge. Particles either hit the positive

The 3 dialects that were examined in this article were African American Vernacular English, Chicano English and Standard American English.

number in order from 1 to 100, the make of the car, the price when new

respondent answers, and then the experimenter records the response). Lastly, there are a string of self-administered questionnaires that include text-computer assisted self-interviewing (text-CASI, which are laptops having the question and answer), audio-computer assisted self-interview (audio-CASI, same thing as text-CASI, except the questions are in audio format), and video-CASI (questions are in video format instead). (151-153)

His 3 papers, which later became famous as the “trilogy “were published in the Philosophical magazine in July. Later in the year He revised Rutherford’s nuclear structure to Max Planck’s quantum theory and created the Bohr model of the atom. He revolutionized the theory of electrons traveling in orbits around the atoms nucleus. He also announced the idea that an electron could drop from a higher energy orbit to a lower one, in the progress also emitting a quantum of discrete energy. This theory became known as the old quantum theory. The trilogy’s acceptance was dur to it s ability to explain the phenomena which blocked other models ,and predicted the results that were then verified by experiments. Today the Bohr model of the atom has been outdated but is still known as the best model of atoms, and is still used in high school physics and chemistry.