Physics Final Exam Version 2c 2 Essay

B. In Part I, when adding the needle to the water, which approach worked best to balance the needle on the water—the vertical or horizontal placement? Explain your answer.

3. Calculate the N component of a resultant 32.5 m/s, 35.0 º E of N.

11. Use the equation: q = m(SH)ΔT to solve for the specific heat of the metal.

2. How did concentration and/or volume differences affect the heat change (q) for each trial?

Batteries store energy in chemical form. They release energy by pumping electrons’ through wires from the minus pole to the plus pole. Devices inbetween convert this energy to another form, Efficieny- e.motor=85%, combustion= 20%

3. When heat flows from a warm object in contact with a cool object, do both objects undergo the same amount of temperature change?

14. Calculate the change in the metal’s temperature by subtracting the initial temperature of the iron from the final temperature of the iron. ΔT = Tf - Ti (5 points)

Please save this document before you begin working on the assignment. Type your answers directly in the document. When you have finished, submit your work to your teacher.

Task Description:The world communicates by making extensive use of the electromagnetic spectrum. For the average person this is commonly accessed using radio waves. These radio waves may be over the AM or FM radio wave bands or the radio waves that transmit our television signals. Not only are people always within a ‘phone call of each other anywhere in the world they are also able to find out exactly where in the world they are by use of

This experiment will show the connection between temperature the chemiluminescence of light sticks. How will the temperature in each cup effect the chemiluminescence of the sticks and which temperature will add and remove more energy to the chemical reaction in each light stick. The independent variable in this experiment will be the temperature in each cup which will be measure in degrees, the dependent variable will be the reaction of each light stick and the constant will be that the light sticks will be the same, same cups, same thermometers and the light sticks will stay in the cups for the same amount of time.

The coolest position of the three is the first, the tip of the outer flame and the last position, halfway down the inner flame, falls between the 1st and 2nd positions in terms of temperature. A major discussion that can be assessed is if the flame positions for the 3 subgroups were in the right position. The main conclusion of this experiment is that the hypothesis was not supported by the results. The group thought that the second position, the tip of the inner cone, would be the hottest. The data proved the hypothesis correct by showing the tip on the inner cone produced the highest temperature.

It is a measure of how easy or hard it is to make something hotter. If a substance is fairly easy to heat up, it has a low specific heat because it takes a small amount of energy to increase its temperature. If the substance is hard to heat up then it must have a high specific heat because it takes lots of energy to make the temperature

We will be using 6 different fuels to heat up 100ml of water, and find out the changes of the temperature. We will measure the temperatures of the water before and after the experiment. We will burn heat the water for exactly 2 minutes, and check the changes in temperature. The change in temperature will allow us to work out the energy given off the fuel by using this formula:

2.   How could you adjust the afferent or efferent radius to compensate for the effect of the reduced pressure on glomerular filtration rate and urine volume?  Use the simulation to determine your answer.

HEAT 4.1 UNDERSTANDING THERMAL EQUILIBRIUM 1. Define: The measure of the degree of hotness of an object. (a) Temperature Measured in SI unit Kelvin, K A hot object is at a higher temperature than a cold object. Form of energy, measured in Joules, J (b) Heat Heat is transferred from hotter object (higher temperature) to colder object (lower temperature) When an object is heated, it will absorb heat energy and the temperature will increase. When an object is cooled, it will release heat energy and the temperature will decrease. (c) Thermal Two objects are in thermal contact when heat energy contact can be transferred between them. (d)Heat transfer When two objects with different degrees of hotness come into thermal contact, heat energy is