Lab assignment, physics homework help

Anonymous
timer Asked: Apr 14th, 2017
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Question description

I want some one to do for me a lap assignment. The INFO and the instructions in the files that I posted.

#Make sure to follow the instructions because my doctor will grade it.

Name:_________________________________ Class: ______________________________ Date: ______________________________ Adding Vectors Graphically and Component Method To learn how to add vectors graphically and component method and compare with expected resultant vector. Equipment 1. protractor 2. ruler 3. pencil 4. paper Theory DEF: A vector is a quantity that has both magnitude and direction. DEF: A scalar is a quantity that has magnitude but NO direction. Ex. Vectors Force Velocity Displacement Acceleration Ex. Scalars Temperature Time Mass Speed Vector Notation A – Boldface letters ⃑ - Arrow above letter | | – Magnitude of vector A A vector is defined graphically by an arrow whose length is proportional to the magnitude of the vector quantity. The direction of the arrow points in the direction of the vector quantity. Adding Vectors Graphically Consider adding two vectors A and B graphically. The two vectors are shown below. 1. Select an appropriate scale. (Ex. 20 cm = 5 N) 2. Draw vector A to scale and in the proper direction. 3. Draw vector B to the same scale with its tail at the tip of A and in the proper direction. 4. The resultant vector R = A + B is the vector drawn from the tail of vector A to the tip of vector B. 5. Calculate the magnitude of the resultant vector R using the selected scale and measure its direction with a protractor. 6. This same process applies if you add more than two vectors. This method of adding vectors graphically is also referred to as the i. head-to-tail method, ii. analytical method, and iii. geometric method. Example A physics student realizes that class was to start soon, the student dashes 2.0 km due east, then 1.0 km at 45o north of east, and finally 0.5 km due north. Calculate the displacement of the student. Scale: 50cm = 2 km ANS: R ≈ 2.98 km, θ ≈ 24o Adding Vectors Using Component Method Consider adding three 2-D vectors A, B, and C: A = Axx+ Ayy B = Bxx + Byy C = Cxx + Cyy 1. Add the x-components and y-components of each vector to obtain the resultant vector R in unit vector notation. R = A + B + C = (Axx+ Ayy) + (Bxx + Byy) + (Cxx + Cyy) R = (Ax + Bx + Cx) x + (Ay + By + Cy) y Rx = Ax + Bx + Cx Ry = Ay + By + Cy R = Rx x + Ry y 2. Calculate the magnitude of the resultant vector R . √ 4. Same procedure applies if you add more than 3 vectors. However, if the vectors are 3D, then you must specify the direction of the resultant vector R relative to the positive x, y, and z axis. Procedure Exercise 1 1. A car travels 20 mi at 600 north of west, then 35 mi at 45o north of east. 2. Express each displacement vector in unit vector notation. Take the +x-axis due east and the +y-axis due north. 3. Use the component method to obtain the resultant displacement vector in unit vector notation. Calculate the magnitude and direction. 4. Add the displacements vectors graphically using an appropriate scale and coordinate system. Obtain the resultant vector and calculate the magnitude and direction. 5. Calculate the % error between the graphical and component method. Take the component method to be the expected value.[ Exercise 2 1. Suppose a particle is acted on by the following three forces: F1=m1g @ 30o (m1 = 300 gr) F2=m2g @ 110o (m2 = 450 gr) F3=m1g @ 230o (m3 = 400 gr) Calculate the force particle 1 2 3 mass gravity Force Direction Finding resultant force using Component Method 1. Express each force F1, F2, and F3 in unit vector notation. Take the origin to be at the center of the force table (at pivot point) with the +x axis along 0o and +y-axis along 90o. 2. Use the component method to obtain the resultant force vector Fcomp in unit vector notation. Calculate the magnitude and direction. Finding resultant force using Graphically 1. Add the vectors F1, F2 and F3 graphically using an appropriate scale and coordinate system. 2. Obtain the resultant vector Fgrap. Calculate the magnitude and direction. 3. Calculate the % error between the graphical method, component method.
Science Laboratory Report Grading Framework Developed by Dr. Peter Jeschofnig Title Page Total = 5 pts. Theory/purpose Total =10 pts. Equipment Used Total =10 pts. Procedures Total =10 pts. Data/ Observations Total =25 pts. Analysis Total =20 pts. Conclusions Total =20 pts. Unsatisfactory Borderline Satisfactory Excellent Missing more than two items, title, or names. Contains title and all names; but two items are missing. Contains tile and names, but one item is missing. Contains title, author and partners’ names, course name, experiment number; and report dates. 0-2 points No Theory, or incomplete theory and purpose/or incomplete theory and purpose . 3 point Includes adequate theory and purpose . 4 points Contains theory and purpose , but some result details are missing. 5 points Contains clear purpose statement and complete theory . 8 points 10 points 5 points 0-3 points Incomplete or missing equipment(s) used . Clearly states the equipment(s) used 10 points 0-4 points Unclear or missing instructions. Most steps are missing, incomeplete, disorganized, or not sequential. Vague instructions. Some steps missing, not well organized, or not fully sequential. Includes a clear set of instructions. A few steps are missing. Reasonably well organized. In clear, concise sentences with step-by-step format. Experiment can be replicated. Includes materials in methods.. 0-4 points Data is missing, incomplete, inaccurate, or has material defects; No data tables when appropriate. Missing graphs. Most or all observations missing. Incomplete or no calculations. Few questions answered. 6 points Data presented, but poorly organized, inaccurate, or missing. Graphs are inaccurate in data display, incorrectly or not labeled. Poor or incomplete observations Poor or incomplete calculations. Some questions answered. 8 points Data presented clearly and neatly. Most charts, tables, diagrams, and graphs labeled and accurate; detailed and reasonably accurate observations. Most calculations shown and are correct. Most questions answered. 10 points Data presented clearly and neatly. All charts, tables, diagrams, and graphs labeled and accurate. Appropriate type of graphing chosen. Detailed and accurate observations. Calculations shown and are correct. All questions correctly answered. 0-12 points Explanation of data is missing, inaccurate, or not expressed in complete sentences. Error analysis incomplete, missing or wrong. 16 points Incomplete description of data; 3 or more important observations are missing. Error analysis is incomplete or only partially correct. 20 points Results stated correctly in complete sentences. No more than 1 or 2 important observations are missing. Error analysis present and correct. 25 points Complete description of what occurred stated in complete sentences. Data is used accurately in reporting/analyzing the results. Error analysis present and correct. 0-8 points Conclusion is missing or does not fully explain the objectives of the lab. Relevant vocabulary missing. No practical application given. Discussion of scientific principle missing. Only 12 sentences. 12 points Conclusion explains the objective, but data is not used accurately to support it. Only 2-3 sentences. 15 points Adequate paragraph of explanation that includes supporting evidence with data, but missing “big picture”, scientific error, and/or additional inquiry suggestions. Good vocabulary use. Only 4-5 sentences. 20 points Well written and logical paragraph of explanation supported by data that addresses the objectives, scientific principles, and ends with the ‘big picture. Includes scientific error and pro-poses inquiry for un-answered questions 6+ sentences. 0-8 points 12 points 15 points 20 points TOTAL POINTS OUT OF 100 POSSIBLE POINTS ______ Score

Tutor Answer

madushan
School: Carnegie Mellon University

===================================================Please find the attachment

Theory
DEF: A vector is a quantity that has both magnitude and direction.
DEF: A scalar is a quantity that has magnitude but NO direction.
Ex.

Vectors
Force
Velocity
Displacement
Acceleration

Ex.

Scalars
Temperature
Time
Mass
Speed

Vector Notation A –
Boldface letters
- Arrow above letter
– Magnitude of vector A
A vector is defined graphically by an arrow whose length is proportional to the magnitude of the vector
quantity. The direction of the arrow points in the direction of the vector quantity.
Adding Vectors Graphically
Consider adding two vectors A and B graphically. The two vectors are shown below.

1. Select an appropriate scale. (Ex. 20 cm = 5 N)
2. Draw vector A to scale and in the proper direction.
3. Draw vector B to the same scale with its tail at the tip of A and in the proper direction.
4. The resultant vector R = A + B is the vector drawn from the tail of vector A to the tip of vector B.
5. Calculate the magnitude of the resultant vector R using the selected scale and measure its direction with
a protractor.
6. This same process applies if you add more than two vectors.
This method of adding vectors graphically is also referred to as the
i.
head-to-tail method, ii.
analytical method, and
iii.
geometric method.

Adding Vectors Using Component Method
Consider adding three 2-D vectors A, B, and C:
A = Axx+ Ayy
B = Bxx + Byy
C = Cxx + Cyy
1. Add the x-components and y-components of each vector to obtain the resultant vector R in unit vector
notation.
R = A + B + C = (Axx+ Ayy) + (Bxx + Byy) + (Cxx + Cyy)
R = (Ax + Bx + Cx) x + (Ay + By + Cy) y
Rx = Ax + Bx + Cx
Ry = Ay + By + Cy
R = Rx x + Ry y
2. Calculate the magnitude of the resultant vector R

4.

Same procedure applies if you add more than 3 vectors. However, if the vectors are 3D,
then you must specify the direction of the resultant vector R relative to the positive x, y,
and z axis.

Equipment
1. protractor
2. ruler
3. pencil
4. paper

Procedure
Exercise 1
1. A car travels 20 mi at 600 north of west, then 35 mi at 45o north of east.
2. Express each displacement vector in unit vector notation. Take the +x-axis due east and the
+y-axis due north.
3. Use the component method to obtain the resultant displacement vector in unit...

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Anonymous
Totally impressed with results!! :-)

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