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Two soccer players, Mary and Jane, begin running from nearly the same point at t ...

Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 3.83 m/s, while Jane takes off in a direction 65.0o north of east at 5.01 m/s. How long is it before they are 27.6 m apart?

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this work is only for prof.goodwill.  ...

this work is only for prof.goodwill. 

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Plagiarism free and well detailed answer ...

Plagiarism free and well detailed answer

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i have 3 lab reports to submit soon. those are basic lab experiments that we can ...

i have 3 lab reports to submit soon. those are basic lab experiments that we can do at home but i am stuck in the format. i have the format given by the professor. anyone who can do the the attached files let know asap.

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Protons in an accelerator at the Fermi National Laboratory near Chicago are acce ...

Protons in an accelerator at the Fermi National Laboratory near Chicago are accelerated to a total energy that is 400 times their rest energy. (a) What is the speed of these protons?

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an object (mass 10.0 kg) slides upward on a slippery vertical wall. A force F of ...

an object (mass 10.0 kg) slides upward on a slippery vertical wall. A force F of 60N acts at an angle of 60 degrees. determine the normal force exerted on the object by the wall and determine the object's acceleration.

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http://media.pearsoncmg.com/aw/aw_hewitt_cp_10/tutorials/electrostatics/electros ...

http://media.pearsoncmg.com/aw/aw_hewitt_cp_10/tutorials/electrostatics/electrostatics.html?ssocheck=done&key=92091655214687345102007&boogers=true  <<<<< TUTORIAL   Click the link above to watch the tutorial on Electrostatics at The Physics Place. (If you have any trouble viewing the tutorial, please contact Heather Hill via email.)     Static Electricity (8 points) Purpose: To demonstrate the effect of static electricity. Materials: comb; aluminum foil; scissors Procedure: Cut ten tiny pieces of aluminum foil and lay them on a table. Quickly move the comb through you hair. (Your hair must be clean, dry, and oil-free.) Hold the teeth of the comb above the foil pieces. Do not touch the aluminum Results: What happened? Why?   Logical Order (12 points) If you start with two charged spheres and end with two neutral spheres, number the pictures in the order that shows how charges flow. Charging by induction is when you start with two neutrally charged spheres and end with two oppositely charged spheres with a third charged object not in direct contact. The following graphical pictures are arranged randomly. Number the pictures in the correct order. The order should start with two neutrally charged spheres and end with two oppositely charged spheres.(Need help? Quick hint )   Written Response (10 points) Describe how materials become charged. Start with the description of how an atom becomes charged. Then zoom out from the atomic view and explain the molecular view. Finally, explain how the molecular view can be simplified to a macroscopic view of positively and negatively charged objects.       SUBMIT RESULTS ON THE REPORT LAB ATTACHED!!!!!

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. . For Writing the Lab Report: please read Instruction_1 and Instruction_2. ...

. . For Writing the Lab Report: please read Instruction_1 and Instruction_2.   For the data, table and graph you will have to look at Data_1, Data_2, Data_3.  

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• Clearly mention question numbers while solving • Mention the formulas you ...

• Clearly mention question numbers while solving • Mention the formulas you are using and steps of solution. • Clear and procedural steps 1) Compute your average velocity in the following two cases: (a) You walk 73.2 m at a speed of 1.22 m/s and then run 73.2 m at a speed of 3.05 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.22 m/s and then run for 1.00 min at 3.05 m/s along a straight track. (c) Graph x versus t for both cases and indicate how the average velocity is found on the graph. (10) (a) average velocity=s/t=v0+at/2=v0+(v1-v0)/2=(v1+v0)/2=(1.22+3.05)/2=2.135m/s (b) 2.135m/s © 2) At a construction site a pipe wrench struck the ground with a speed of 24 m/s. (a) From what height was it inadvertently dropped? (b) How long was it falling? (10) 3) Two subway stops are separated by 1100 m. If a subway train accelerates at 1.2 m/s2 from rest through the first half of the distance and decelerates at 1.2 m/s2 through the second half, what are (a) its travel time and (b) its maximum speed? (10) 4) In 1939 or 1940, Emanuel Zacchini took his human- cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net . Assume that he is launched with a speed of 26.5 m/s and at an angle of 53.0°. (a) Treating him as a particle, calculate his clearance over the first wheel. (b) If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net’s center have been positioned (neglect air drag)? (10) 5) A rifle that shoots bullets at 460 m/s is to be aimed at a target 45.7 m away. If the center of the target is level with the rifle, how high above the target must the rifle barrel be pointed so that the bullet hits dead center? (5) 6) Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 8.0 N, acting 62 north of west. What is the magnitude of the body’s acceleration? (5) 7) A 500 kg rocket sled can be accelerated at a constant rate from rest to 1600 km/h in 1.8 s. What is the magnitude of the required net force? (5) 8) Four penguins that are being playfully pulled along very slippery (frictionless) ice by a curator. The masses of three penguins and the tension in two of the cords are m1 12 kg, m3 15kg,m4 20kg,T2 111N,andT4 222N.Findthepen- guin mass m2 that is not given. (10) 9) A block of mass m1 3.70 kg on a frictionless plane inclined at angle 30.0 is connected by a cord over a massless, frictionless pulley to a second block of mass m2 2.30 kg . What are (a) the magnitude of the acceleration of each block, (b) the direction of the acceleration of the hanging block, and (c) the tension in the cord? (10) 10) Blocks A and B have weights of 44 N and 22 N, respectively. (a) Determine the minimum weight of block C to keep A from sliding if ?s between A and the table is 0.20. (b) Block C suddenly is lifted off A. What is the acceleration of block A if ?k between A and the table is 0.15? (10) 11) A puck of mass m 1.50 kg slides in a circle of radius r 20.0 cm on a frictionless table while attached to a hanging cylinder of mass M 2.50 kg by means of a cord that extends through a hole in the table (Fig. 6-43). What speed keeps the cylinder at rest? (10) 12) A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by (a) the force from the helicopter and (b) the gravitational force on her? Just before she reaches the helicopter, what are her (c) kinetic energy and (d) speed? (10) 13) You drop a 2.00 kg book to a friend who stands on the ground at distance D 10.0 m below. If your friend’s out- stretched hands are at distance d 1.50 m above the ground (Fig. 8-30), (a) how much work Wg does the gravitational force do on the book as it drops to her hands? (b) What is the change U in the gravitational potential energy of the book – Earth system during the drop? If the gravitational potential energy U of that system is taken to be zero at ground level, what is U (c) when the book is re- leased and (d) when it reaches her hands? (10) 14) A bullet of mass 10 g strikes a ballistic pendulum of mass 2.0 kg. The center of mass of the pendulum rises a vertical distance of 12 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet’s initial speed. (10)

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