B, C and D Electrical Circuit – an electrical device that provides a path for electrical current to flow Frequency – The cycles per second of alternating current, measured in Hertz Amplitude – the maximum difference of an alternating electric current or potential from the average value Phrase – is a position of a point in time on a waveform cycle Bit time – the time it takes for one bit to be ejected from a network interface card at a standard speed Encoding Scheme – a system used by computers to represent data as characters Unshielded twisted-pair – The word unshielded refers to the fact that UTP cables have no added shielding materials to prevent EMI problems Core- The light source on one end of the cable shines light into the core Cladding- surrounds the core, for the entire length of the cable, and reflects the light into the core Radio waves- work well for networking because as a waveform, radio waves can be changed (modulated) over time to send data. Wireless WAN- used often in mobile phone network/mobile network Wireless LAN- don’t not use cables and do use radio waves to send data Access Point – all user devices communicate only through the AP, most WLAN’s use this wireless
For each respective frequency of light, the cutoff voltage was recorded. The intensity of the light remained constant. With the data collected, and approximate straight line graph could made, plotting frequency against the stopping voltage (Vs-f). The x intercept on the graph is the threshold frequency, or the minimum required
Therefore, according to Hess’s law, the heat of reaction of the one reaction should be equal to the sum of the heats of reaction for the other two. This concept is sometimes referred to as the additivity of heats of reaction. The primary objective of this experiment is to confirm this law. The reactions we will use in this experiment are: 18 - 1 Computer 18 You will use a Styrofoam cup in a beaker as a calorimeter, as shown in Figure 1. For purposes of this experiment, you may assume that the heat loss to the calorimeter and the surrounding air is negligible.
All matter may exist in any of three physical states of matter.In the graphic on the left the solid and liquid forms of water - ice are shown. | | Physical Changes:A physical change takes place without any changes in molecular composition. The same element or compound is present before and after the change. The same molecule is present through out the changes. Physical changes are related to physical properties since some measurements require that changes be made.Melting Point: As solid matter is heated it eventually melts or changes into a liquid state at the melting point.
The dependent variable in this investigation is the deflection of the cantilever in meters. This will be indirectly measured by measuring the initial height of the bottom of the cantilever with no mass added (which is equal to the height of the table) and the new height of the bottom of the cantilever after each trial, which will be measured with mass added. The difference between these heights is equal to the deflection of the cantilever. The material and other physical properties of the cantilever will be controlled by using the same yardstick as a cantilever for each trial. 2 of 22 The mass loaded onto the cantilever will be controlled by using the same mass for each trial.
An overall combination of three types of sub-atomic matters: electron, proton and neutron. And these sub-atomic matters are bounded together with a force, and this force is known as the electromagnetic force. This is where two different type of charges; positive (+) and negative (-) would attract while having the same charge type would result in an exerting (outward) force. All atoms are considered to have a neutral combination of both positive and negative charges. As for, the positive charges are found in the protons while the negative charges are found in the electrons.