Lab 1 - Measurement - Volume of the Library

A student measures the diameter of a cylindrical copper rod using a Vernier caliper. Which of the following techniques would increase the precision of the measurement? A. Measure the diameter along different parts of the cylinder using a ruler and then take the average value of the readings. B. Measure the diameter along different parts of the cylinder using a Vernier caliper and then take the average value of the readings. C. Measure the diameter using a Vernier caliper without zero error. D. Measure the diameter using a micrometer caliper.

Describe possible sources of random and systematic errors in the following measurement.   Speeds of cars recorded by a police officer using a radar gun.   Part 1 Which of the following would be random errors in this​ situation? Select all that apply.     A. Errors made by using a radar gun that is incorrectly calibrated and consistently reads high or low.   B. Errors made by the police officer in reading the radar gun.   C. Errors in the speedometers of the cars observed.   D. Errors made by the police force when choosing which officer to check the speeds.   E. Errors made when calibrating the radar gun.   F. Errors made by the police officer in recording the speeds.

please follow instruction do not do it other way follow guess method only please    Solving problems in Physics, we must always use GUESS method.Guess stands for: Guess: G Here you write down what is given in the questionUnknown: U Here you list what you have to calculate, to solve for.Equations: E here you list all the formulas you need to use to solve the problemSubstitution: S This first letter S in the word, you will just substitute what is given in theformula. You do not calculate anything. The calculations will occur at the second S: Solve. Whatis very important here is to carry with you the units of measure in the formula. Not only thenumbers. This is very important, once again.Solve: S The last step, second S, you will solve what you plugged in the first S for Substitution.Very important here is to manipulate the units of measure such that the final units of measureto be proved by your work. This part is very important, since you will allow you to verify thatwhat you do is…

Question 14 Plotted measurements of the length of an object are shown below. Utilize the graph to get the average length, measurement error, and maximum and minimum values. GRAPH A Plot of Length Readings 2.05 6.7 6.9 6.85 6.8 6.75 6.55 Number of Trials Length of an Object

4. Accuracy is often expressed as an average of several measurements. Look at the target to the right. In your opinion, how well do the measurements on the target represent: (Justify your opinion.) a. Accuracy? b. Precision?

Underline the digits that are known with certainty and highlight in color the digits that are estimated. If a number is ambiguous, that is, the number of significant figures is uncertain, state so. In each case, explain your reasoning. 3) a) 4.35 m b) 0.009340 g c) 3400 km d) 1.38 x 103 m/s.

Basic rules in considering a formula or writing an equation in Physics would be : 1. The fundamental or base quantities such as length [L], mass [M], time [T], are called dimensions 2. Dimensional analysis is a procedure to verify the experimental correctness of an equation. 3. Both sides of an equation must match in numerical values even though dimensions are not matched 4. Dimensions may be treated like algebraic quantities. Which of the above rules are correct? . Rules 2 and 4 • Rules 1 and 3 • Rules 1 and 2 . Rules 1 and 4

C. leas t del Niu 3. Three students make measurements (in m) of the length of a rod using a meter stick. Each student's measurements are tabulated in the table below. Using your calculator in statistic mode calculate the mean L, standard deviation S and uncertainty u of the measurements. Student L1 L3 L2 1.4711 L4 1.4715 SD u Student 1 1.4717 1.4722 1,4716 t.4754 1.4710 1.4753 1.4759 1.4756 1.4749 Student 2 Student 3 1.4719 1.4723 1.4705 1.4719 Note that the actual length of the rod is determined by a laser measurement technique to be 1.4715 m (this should be considered the standard value). a) State how one determines the accuracy of a measurement. Apply your idea to the measurements of the three students above and state which student has the most accurate measurement.

sadvantage? -One advantage to using scientific notation is that it allows you to write a large number quickly by making it "shorter". One disadvantage is that| 3. Which of the following questions are testable using scientific experimentation? Identify the dependent variable for each testable question. A. Are there more seeds in a medium-sized Red Delicious apple or a medium-sized Granny Smith apple? B. Why do people smoke cigarettes? C. What happens to your blood glucose level if you do not eat lunch? D. Which planet is the most interesting to study? E. Which objects are attracted by a magnet: a metal paperclip, a copper penny, or aluminum foil?

I need help with a University Physics 1 (Unit Measurement and Conversion) - The problem is described in the image below:

Part (d) Express A in terms of w, D, and L. A = Part (e) A = Solve for the numerical value of X, in nanometers.

1.2 Measurements – Length, Area, Volume. Mass. Time, Density and Temperature A teacher asks a pupil to measure the width of the science laboratory table. Which one of the following instruments should he choose? 1. А. a measuring tape a pair of dividers a pair of external calipers a 30-centimeter rule В. D. Two marbles of equal diameters were arranged on a meter rule as shown in the figure. The diameter of one marble is 2. A. B. 0.6 cm 1.2 cm 2.7 cm 3.3 cm set squares C. D. marble marble metre rule 2 cm 3 cm 4 cm 3. A student carries out an experiment to determine the mass of paraffin oil in a beaker. The readings obtained from the experiment are as follows: Mass of empty beaker = 45.3 g Mass of beaker + paraffin oil = 115.3 g What the mass of the paraffin oil? A. В. 45.3 g 115.3 g 70.0 g 160.6 g C. D. 4. The normal body temperature of a person is A. В. 98.4 °C 36.6 °C С. D. 37.0 °C 26.9 °C 5. Aminah wants to measure 75 cm' of water. Which of the following will she Use? А. Beaker Gas…

What is error in measurement? Broadly explain different types of error in measurement.

Short questions 5. The volume of a sphere is given by V =- A sphere has a radius of 0.2 cm and a mass of 345 ug (micrograms). What is the density of the sphere in SI units? Show the steps for all of the unit conversions.

Problem Set: Measurement A. Select the best answer The process of comparing a property of an object to a well-defined and agreed upon referent is called the process of (a. generalizing b. measurement c. graphing d. scientific investigation). The height of an average person is closest to (a. 1.0 m b. 1.5 m c. 2.5 m d. 3.5 m). One half liter of water has a mass of a (a. 0.5 g b. 5 g c. 50 g d. 500 g). A cubic centimeter (cm3) of water has a mass of about 1 (a. ml b. kg c.g d. dm). The property of volume is a measure of (a. how much matter an object contains b. how much space an object occupies c. the compactness of matter in a certain size d. the area on the outside surface). 1. 2. 3. 4. 5. B. Problems What is your height in meters? In centimeters? 1. 2. What is your mass in kilograms? In grams? 3. What is the mass of 3 L of water? 4. How many seconds are in one day? 5. What is the density in grams per cubic centimeter of a rock that has a mass of 1 kg and a volume of 280 cm? 6. Compute…

To generate theories based on participant perspectives is something to do with qualitative research problems;not quantitative!   a. TRUE   b. FALSE

Practice Task 1. Consider the following satements below. Express each number in standard notation or in scientific notation as indicated. Express your solution. 1. The length of an electronic component is 0.0001265 mm. Write this in scientific notation. 2. The diameter of human immunodeficiency virus (HIV) os 0.00012 mm. What is the diameter if HIV in scientific notation? 3. Rocks around Mayon Volcano aged more than 20 000 000 years old. Express this number in scientific notation.4. The friction between the ocean and the ocean floor due to tides is causing the Earth's rotation to slow down by about 2 x 10-8 seconds per day. What real number is equivalent to 2 x 10-8?5. The radius of a hydrogen atom is 2.5 x 10-11, Express this number in standard notation.

True or false   1. The unit-factor method is used as a validity tool in deriving equations.   2. Kinetic energy is dependent on the mass and velocity of an object.   3. Acceleration is speed with direction.   4. Physical change in matter alters its appearance and identity.   5. Height is the greatest measurement of a 3D object.   6. The acceleration of an object is dependent on the net force acting on an object.   7. The English system of measurement is based on the power of ten.   8. All objects fall at the same time.   9. Temperature is the flow of energy from a hot area to a cold area.   10. The position of the object increases potential energy.

I need help solving this problem step by step to understand it please give answer in exponential format and 3 significant figures

Determining Significant Digits Any measurement is inaccurate to some degree. The inaccuracy stems from several factors. The precision of any measuring device is limited. The person doing the measurement may introduce error. The experi- mental technique may be faulty. Because a measurement contains some degree of inaccuracy, the number of digits that are valid for the measurement are also limited. There are four basic rules that can be used to determine the number of significant digits in a mea- surement. 1. Nonzero digits are always significant. 2. All final zeros after the decimal point are significant. 3. Zeros between two other significant digits are always significant. 4. Zeros used only for spacing the decimal point are nọt significant. Suppose an observer measures the speed of an object amd determines that it is moving at 6.13 m/s. The speed of a second object is determined to be 5.02 m/s. Which digits are significant in these two measurements? According to rules 1 and 3, all the…

4 students measure the length of a nail and they obtained the following values: 2.34 cm, 2.33 cm, 2.32 cm and 2.35 cm. What can we say about these values? a. The values are accurate but we can not say anything about the precision O b. The values are precise and accurate None of them O d. The value are precise but not accurate O e. Arandonerror is present

What are the calibrations does the device has? A. English and British calibration  B. English and metric calibration  C. Metric and SI calibration  D. None of the above