Reading Worksheet 1Read Sections 1.1 – 1.5 (pp 1 – 16) of Ch.1 (handout-version)Due Wednesday 10-JanuarySome of the reading is background information that is likely to be unfamiliar to you but which you may find interesting. I recommend you first skim this assignment, then read the chapter, doing the "stop and think" activities, the in-line exercises, and this assignment as you go.1. What is the approximate radius of an atom? ___________What is the approximate radius of a proton? ___________2. In which of the following situations are two objects interacting? (Think about how you can tell. Select all that apply.)a. A baseball that was hit by a batter flies along a curving path toward the outfield.b. A neutrino passes straight through the Earth at nearly the speed of light.c. A space probe leaves the solar system traveling at constant velocity toward a distant star.d. Water freezes in an ice cube tray in the freezer.e. A charged particle leaves a curving track in a particle detector.f. A communications satellite orbits the Earth.g. A book rests on a table.3. A spaceship far from all other objects uses its impulse power system to attain a speed of 104 m/s. The crew then shuts off the power. According to Newton’s first law, what will happen to the motion of the spaceship from then on? Check all that apply.____ The spaceship will travel on a curving path.____ The spaceship will gradually slow down.____ The spaceship will stop suddenly.____ The spaceship will move in a straight line.____ The spaceship will enter a circular orbit.____ The speed of the spaceship will not change.4. Why do we use a spaceship in outer space, far from other objects, to illustrate the principle that an object that does not interact with anything travels at constant speed in a straight line (Newton’s first law)? Why not a car or a train? (Select all that apply.)_____ A car or train interacts gravitationally with the Earth._____ A spaceship can never experience a gravitational force._____ A car or train can't travel fast enough._____ A car or train touches other objects, and interacts with them._____ The spaceship has negligible interactions with other objects.5. You slide a coin across the floor, and observe that it slows down and eventually stops. A sensitive thermometer shows that its temperature increased. What can we conclude? (Select all that apply.)_____ Because the coin's speed changed, we conclude that it interacted with one or more other objects._____ Because the coin got hot, we conclude that it interacted with one or more other objects._____ Because the coin did not change shape, we conclude that it did not interact with anything._____ Because the coin traveled in a straight line, we conclude that it did not interact with anything._____ Because the coin slowed down, we conclude that Newton's first law does not apply to objects in everyday life, such as coins.6. Read these questions carefully. They are not the same. (Select all that apply.)(a) Which of the vectors in the diagram have magnitudes equal to the magnitude of a?bfcgd nonee (b) Which of the vectors in the diagram are equal to a?bfcgd nonee7. In the diagram below three vectors are represented by arrows in the xy plane. Each division represents 1 meter.(a) What are the components of the vector a?a= <_____, ______, 0 > m(b) What is the magnitude of the vector a? |a| = __________m(c) What are the components of the vector c?c= <_____, ______, 0 > m(d) What is the magnitude of the vector c? |c| =___________m(e) What are the components of the vector g?g= < _____, _____ , 0 > m(f) What is the magnitude of the vector g? |g| = __________m8. Which of the following are vectors? (Select all that apply.)a. -3×10-6d. 5*<33,1.04,-9.5>b. 3.5 e. <0.7,0.7,-0.7>c. <0,2.3,-1> f. 09. Which of the following are unit vectors? (Select all that apply.)a. <0, -1, 0> h. <0.577, -0.577, 0.577>b. <0, -1, -1> i. <3,0,0>c. <0.372, -0.557, 0.743> j. <1, 0, 0>d. <0.5, 0.5, 0> k. <0.9, 0, 0.1>e. <0.949, 0, -0.316> l. <0.333, 0.333, 0.333>f. <0, 0, -1> m. <1, 1, 1>g. <0, 1, 0>10. A proton is located at <xp,yp,zp>. An electron is located at <xe,ye,ze>.What is the vector pointing from the proton to the origin?a. < xp,yp,zp> e. < (xp-xe),(yp-ye),(zp-ze)>b. < xe,ye,ze> f. < (xe-xp),(ye-yp),(ze-zp)>c. < -xp,-yp,-zp> g. < (xp+xe),(yp+ye),(zp+ze)>d. < -xe,-ye,-ze> h. < 0,0,0 >11. A proton is located at <xp,yp,zp>. An electron is located at <xe,ye,ze>.What is the vector pointing from the electron to the proton?a. < xp,yp,zp> e. < (xp-xe),(yp-ye),(zp-ze)>b. < xe,ye,ze> f. < (xe-xp),(ye-yp),(ze-zp)>c. < -xp,-yp,-zp> g. < (xp+xe),(yp+ye),(zp+ze)>d. < -xe,-ye,-ze> h. < 0,0,0 >12. If a= < 3, -5, 9 >, then what is 3* a?3*a = <_____ , _____ , ______ >13. How does the magnitude of 3*a compare to the magnitude of a?a. The magnitude of 3*a is the same as the magnitude of a.b. Not enough information is given.c. The magnitude of 3*a is a factor of 3 greater than the magnitude of a.d. The magnitude of 3*a is a factor of 3 less than the magnitude of a.e. The magnitude of 3*a is zero.14. If p= <-2,5, 7>, what is 5 + p?a. < -7,0,2 >b. This is a meaningless expression, because a scalar cannot be added to a vector.c. < -0.40,1.00,1.40 >d. < 3,10,12 >e. < -10,25,35