# Free Length Essays and Papers

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• ## The Length of a Wire Affects Its Resistance

928 Words  | 4 Pages

The Length of a Wire Affects Its Resistance Scientific Enquiry: I know that metals are good conductors of electricity. Metals are good conductors because their electrons are easily released allowing electricity to flow. The electrons can carry current because they split up from the positive ions, so they are free to move and to carry current. Factors that affect resistance: 1. Length Â– the longer the wire the more atoms there are for the current to push through. 2. Width Â–

• ## Relationship between different lengths

681 Words  | 3 Pages

Research question Is there a correlation between the leg length, height and stride length? Apparatus 1. Measuring tape 2. Paper 3. Pen 4. Calculator Procedure 1. Using the measuring tape; measure the leg length by putting the starting end of the tape on the malleolus, and the ending point on the iliac crest. Make sure the person you are doing the measurements on does not feel uncomfortable. 2. Record the length of the leg and height in two different columns. 3. Ask the person to walk five metres

• ## An Investigation into the Relationship Between the Resistance of a Wire and Its Diameter and Length

1294 Words  | 6 Pages

An Investigation into the Relationship Between the Resistance of a Wire and Its Diameter and Length Introduction In this investigation I hope to see whether there is a relationship between the thickness of a wire and its length with the resistance in which it produces. First of all, what is resistance? Resistance is calculated as R=V/I Where R is resistance, V = Potential Difference (Voltage) and I = Current (Amount of charge flowing per second) Resistance is the property of a conductor

• ## Focal Length Of A Concave Mirror

327 Words  | 2 Pages

Focal Length Of A Concave Mirror Aim: To observe the focal length of a concave mirror. Materials: · Concave Mirror · Retort Stand · 2 Pins in stands · Candle · Matches · Ruler · Screen Procedure: 1. An approximate focal length was found using parallel light from a distant object. 2. The mirror was placed in a stand. Pin (A) was moved in its stand, in front of the mirror till there was no parallax between the pin and its inverted image. 3. The distance from

• ## How does the length of Magnesium affect the rate of reaction?

1122 Words  | 5 Pages

How does the length of Magnesium affect the rate of reaction? Input Variables – Magnesium strip Hydrochloric acid Outcome Variable - Release of hydrogen I have chosen to investigate whether the difference in length of a Magnesium ribbon, would change the speed in which the reaction between Hydrochloric acid and Magnesium takes. We will measure this by timing how long until the magnesium strip vanishes and there is no release of Hydrogen. Aim: I am trying to find out whether the

• ## The Focal Length of The Lens in the Tube

1651 Words  | 7 Pages

The Focal Length of The Lens in the Tube Plan I plan to set up the apparatus as shown below and change 'b'. To then make the image focus, I will have to change 'c'. When the image is focused, I will measure 'c' and also the magnification of the image. Using this information I will then be able to calculate 'a'. [IMAGE] Hypothesis ========== I predict that using the equations stated in the justification, after measuring values for 'c' and 'm'. I will be able to plot them on

• ## Finding the Focal Length of a Given Convex Lens

722 Words  | 3 Pages

Finding the Focal Length of a Given Convex Lens Aim: - To find the focal length of a given convex lens. Apparatus: - Convex lens Metre rule Screen Candle Matches Wooden blocks Theory:- In this experiment the focal length of a lens is found out. The focal lens of a lens is the distance from the principal focus to the optical centre. It is the point where the image comes into

• ## Investigating Whether the Surface Area or the Length of the Carbon Putty Will Affect Its Resistance

1836 Words  | 8 Pages

Investigating Whether the Surface Area or the Length of the Carbon Putty Will Affect Its Resistance Planning I am investigating of whether the length or the surface area of the putty will have effect on its resistance. We know from the book of Ordinary Level Physics by A.F Abbott that the resistance of a conductor is affected by several factors: Surface area: Thick wires may be regarded as equivalent

• ## Accurately Predicting the Focal Length For Four Lens Systems

1812 Words  | 8 Pages

Abstract: We attempted to accurately predict the focal length for four lens systems: a 100 mm lens, a 200 mm lens, a compound lens system, and an unknown lens. This was done by using an optics track with a mounted light and displayed image, and measurement of the location of image in full focus after movement of a white display plate set up after the lens system. The best value of f100 was determined to be from unweighted computations, with a value of f100=(0.096±0.0004) m, with a percent error of

• ## Measurement Of Short Distance Measurement

921 Words  | 4 Pages

measurements needed to exist. Many short distance measurements were based on the lengths of the human body. The width of a thumb was used to resemble the inch, which we used today in the English System of Measurements. The foot, which is twelve inches, was compared to the length of the human foot; however, today it is derived to be longer than most people’s feet. The yard, which is equal to three feet, was inferred to be the length from the tip of the nose, to the end of the middle finger when the arm and

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