Tugas fisika

-Fitri anggriani -Adelia Dwi

Safitri

A.The definition of measurement

Measuring is comparing the quantity measured with a similar quantity stipulated as a unit.The instrument used as the standard of comparison and instrument used to measure is called the measuring instrument

B.Measuring Instrument

1.gauge lengthLength measuring instrument consists of several meter types such as folding (ribbon), ruler, calipers and micrometers and each has a different level of accuracy.a. Rules - To measure the length of objects less than 50 cm or 100 cm.- The level of precision of 0.5 mm ('/ s x 1 cm)- The unit is listed in the bar cm, mm, and basil inchi.Untuk get exact measurements, then the angle of upright lotus pengamatanharus with objects and ruler.Examples of measurements with a ruler:Meter BandUsed to megukur bisadilakukan not an object with a ruler, such as its size is too long or straight shape. Having a level of accuracy up to 1 mm.

B.Micrometer Screw - Use to determine the length of a very small- Has the level of accuracy up to 0.01 mm

C.Long SlideIn practice, measuring the length sometimes require measurement tool that is able to read the results of measuring accuracy of 0.1 mm (0.01 cm). For this kind of measurement we can use calipers.calipers measuring toolsCalipers are devices used to measure the diameter, the outer dimensions of an object, and dimension in an object. Calipers have two parts, the fixed jaw function as a fixed scale that can not be moved to its location, and sliding jaw which function as a Nonius scale and its location can be shifted back and forth to adjust and measure objects. Calipers can be measured with accuracy up to 0.1 mm.

2. Mass MeasurementThere is only one type of measure of mass, the balance sheet. Even so, the actual balance of species variety. Here's the explanation.Balance, or better known as the scale is a tool used to measure the mass of an object. There are several types of balance sheets, is

A.Markets BalanceMarkets Balance, the balance of which is used in traditional markets, looks like the picture on the side. How to use this balance by putting the object to be weighed on the part shaped like a basin, then the pendulum is placed next to a flat sheet that is almost balanced by the weight of the object, then the balance arm moves and the measurement results can be known

B.Two Arm BalanceTwo Arm Balance, the balance of which is usually found in the lab, looks like the picture on the side. How to use this balance is similar to how the use of market balance, the difference pendulum balance sheet contained in the balance of the market can be replaced with other items.C.Balance of the three armsThree Arm Balance, the balance of which are also commonly found in laboratories, looks like the picture on the side. How to use this balance is by way of a third shift a pointer to the far left (scaled to zero), then place the object to be measured on the left that there is a place for the object to be measured, and the third slide the pointer to the right until the balance, and the result measurements can be known.

4. Measuring TimeMeasuring tools such as a stopwatch and an atomic clock. Here's the explanation.

A.StopwatchStopwatch is a measure of the time that is normally used to measure the fast time, for example, measure the time while racing driver. There are 2 types of stopwatches, the stopwatch analog and digital stopwatch. Analog stopwatch has an accuracy down to 0.1 seconds, while the digital stopwatch has an accuracy up to 0.01 seconds, some even up to 0.001 second. For example, there are drivers who at a distance of 1000 m time when measured using a stopwatch results 9.9 seconds, but when measured with a digital stopwatch result is 9.99 seconds, maybe even 9.999 second. Analog stopwatch shape can be seen in the left image, while the image digital stopwatch can be seen in the right image.

B. Atomic Clock An atomic clock is a time measuring tool that uses an atomic resonance frequency standard as its counter. The workings of this atomic clock that is by filling cesium-133 atom into an atomic clock, then you will see the vibrations of the cesium-133 atom per second. And please note, the second is the time interval required by the cesium-133 atom to perform 9,192,631,770 cycles. And to this day atomic clocks measure time regarded as the most thorough. And estimated atomic clock will make mistakes just 1 second in 1 million years.

5. Speed MeasurementSpeed measuring devices such as speedometer. Here's the explanationA. SpeedometerSpeedometer is a ground vehicle speed gauges, which are standard operating any vehicle on the road. Shaped like the picture on the side. Speedometer function for the driver to know the speed of the vehicle being operated and used the information for controlling the speed of the region / street that is not too slow or too fast, can regulate and control the speed of travel time on the path of the speed restricted. There are several types of sensors measuring speed, the following explanation.Mechanically,the speed measuring device is connected directly to the front wheels or transmission by using a cable that rotates when the vehicle is moving, rotating motion is then converted to drive jaruk speed and Electronics,is a measure of the speed of the work on a sensor that is placed in a vehicle drive shaft axis medeteksi amount for the next round of data sent to the speedometer to the principle of Eddy currents that move the needle indicates the speed or the speed digitally.GPS,accelerometers are devices that use changes in the earth coordinate position data obtained from GPS satellites are processed by a processor speed information.

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