Introduction to SAT II Physics - FreeExamPapers

More documents

Recommendations

Info

7. . A body of mass m sliding along a frictionless surface collides with another body of mass m, which is stationary before impact. The two bodies stick together. If the kinetic energy of the two-body system is E, what is the initial velocity of the first mass before impact? (A) (B) (C) (D) (E) 8. . A hockey puck of mass m is initially at rest on a frictionless ice rink. A player comes and hits the puck, imparting an impulse of J. If the puck then collides with another object of mass M at rest and sticks to it, what is the final velocity of the two-body system? (A) (B) (C) (D) (E) Questions 9 and 10 refer to two 1 kg masses moving toward each other, one mass with velocity = 10 m/s, the other with velocity = 20 m/s. 9. . What is the velocity of the center of mass? (A) 0 m/s (B) 5 m/s to the left (C) 10 m/s to the left (D) 15 m/s to the left (E) 20 m/s to the left 10. . What is the total energy of the system? (A) 50 J (B) 150 J (C) 200 J (D) 250 J (E) 400 J Explanations 136
1. B The athlete imparts a certain impulse to the luge over the 5-s period that is equal to . This impulse tells us the change in momentum for the luge. Since the luge starts from rest, this change in momentum gives us the total momentum of the luge: The total momentum of the luge when the athlete jumps on is 2500 kg · m/s. Momentum is the product of mass and velocity, so we can solve for velocity by dividing momentum by the combined mass of the athlete and the luge: 2. B The area under a force vs. time graph tells us the impulse given to the rock. Since the rock is motionless at t = 0 , the impulse given to the rock is equal to the rock’s total momentum. The area under the graph is a triangle of height 50 N and length 4 s: Calculating the rock’s velocity, then, is simply a matter of dividing its momentum by its mass: 3. D This is a conservation of momentum problem. The initial momentum of the system must be equal to the final momentum. The initial momentum of the system is: 137
Page 1 and 2:
SATII PHYSICS (FROM SPARKNOTES.COM)
Page 3 and 4:
The Good • Because SAT II Subject
Page 5 and 6:
Which SAT II Subject Tests to Take
Page 7 and 8:
After grumbling, however, you still
Page 9 and 10:
Waves 15-19% 11-15 Waves 10% 7-8 Op
Page 11 and 12:
negative, so E, and not A, is the c
Page 13 and 14:
including them anyway because it’
Page 15 and 16:
Two positively charged particles, o
Page 17 and 18:
will a visual representation reliev
Page 19 and 20:
Physics Hint 6: Be Flexible Knowing
Page 21 and 22:
There are a number of ways to label
Page 23 and 24:
Adding Parallel Vectors If the vect
Page 25 and 26:
The result of multiplying A by c is
Page 27 and 28:
neither parallel nor perpendicular.
Page 29 and 30:
Suppose the hands on a clock are ve
Page 31 and 32:
Vector Addition Practice Questions
Page 33 and 34:
2. A The vector 2A has a magnitude
Page 35 and 36:
path, Alan has traveled a much grea
Page 37 and 38:
school student called Andrea. Andre
Page 39 and 40:
centimeters to the left of its star
Page 41 and 42:
We can learn two things about the a
Page 43 and 44:
Acceleration vs. Time Graphs After
Page 45 and 46:
The variable represents the object
Page 47 and 48:
Note that there are certain conveni
Page 49 and 50:
1. . An athlete runs four laps of a
Page 51 and 52:
10. . A woman runs 40 m to the nort
Page 53 and 54:
We know the total distance the spri
Page 55 and 56:
Principles of Natural Philosophy. I
Page 57 and 58:
The component form of Newton’s Se
Page 59 and 60:
e in the direction. And since the s
Page 61 and 62:
which reflects its resistance to be
Page 63 and 64:
In the diagram above, the weight an
Page 65 and 66:
A student pushes a box that weighs
Page 67 and 68:
1. . Each of the figures below show
Page 69 and 70:
7. . In the figure above, a person
Page 71 and 72:
Since the block is motionless, the
Page 73 and 74:
When we are told that a person push
Page 75 and 76:
EXAMPLE A water balloon of mass m i
Page 77 and 78:
The graph above plots the force exe
Page 79 and 80:
Though energy is always measured in
Page 81 and 82:
there is a negative amount of work
Page 83 and 84:
smallest. The answer to question 3
Page 85 and 86: Mechanical Energy Average Power Ins
Page 87 and 88: to a height of 8 m over a time of 4
Page 89 and 90: 8. C When the book reaches the pers
Page 91 and 92: determining what those right number
Page 93 and 94: the ground. The system is initially
Page 95 and 96: calculators, you almost certainly w
Page 97 and 98: and minimize M.” With such a ques
Page 99 and 100: 2. WHAT IS THE ACCELERATION OF THE
Page 101 and 102: Adding these two equations together
Page 103 and 104: force of friction: . Using Newton
Page 105 and 106: m, placed on a frictionless surface
Page 107 and 108: Frequency is given in units of cycl
Page 109 and 110: of the spring due to the gravitatio
Page 111 and 112: The oscillation of a pendulum is mu
Page 113 and 114: Velocity Calculating the velocity o
Page 115 and 116: Practice Questions 1. . Two masses,
Page 117 and 118: 7. . An object of mass 3 kg is atta
Page 119 and 120: Since the system is in equilibrium,
Page 121 and 122: velocity, v. Linear momentum is den
Page 123 and 124: Conservation of Momentum If we comb
Page 125 and 126: As we might expect, the final veloc
Page 127 and 128: A pool player hits the eight ball,
Page 129 and 130: two-dimensional collision is effect
Page 131 and 132: For a System of Two Particles For a
Page 133 and 134: At the front end of the boat, the f
Page 135: 4. . A scattering experiment is don
Page 139 and 140: 7. E Momentum is conserved in this
Page 141 and 142: The diver’s translational motion
Page 143 and 144: 30 π/6 45 π/4 60 π/3 90 π/2 180
Page 145 and 146: elative position to one another. As
Page 147 and 148: acceleration given its angular velo
Page 149 and 150: To find the direction of a rigid bo
Page 151 and 152: A student exerts a force of 50 N on
Page 153 and 154: The torque that produces the angula
Page 155 and 156: The masses in the figure above are
Page 157 and 158: an object sliding down a frictionle
Page 159 and 160: Velocity Average Angular Accelerati
Page 161 and 162: 3. . What is the direction of the a
Page 163 and 164: 1. D An object that experiences 120
Page 165 and 166: At the top of the incline, the disk
Page 167 and 168: from a Latin word meaning “center
Page 169 and 170: Newton’s Law of Universal Gravita
Page 171 and 172: when you are beneath the surface of
Page 173 and 174: EXAMPLE A satellite of mass is laun
Page 175 and 176: Kepler’s Laws After poring over t
Page 177 and 178: Practice Questions Questions 1-3 re
Page 179 and 180: 8. . A satellite orbits the Earth a
Page 181 and 182: Circumference and radius are relate
Page 183 and 184: learn how heat is transferred from
Page 185 and 186: heat, like rubber, have a high spec
Page 187 and 188:
Just as specific heat tells us how
Page 189 and 190:
Conduction is the transfer of heat
Page 191 and 192:
Effectively, this equation tells us
Page 193 and 194:
the way that it does. The Laws of T
Page 195 and 196:
There are a number of equivalent fo
Page 197 and 198:
If we know our formulas, this probl
Page 199 and 200:
5. . An ideal gas is enclosed in a
Page 201 and 202:
Asphalt, like most materials, has a
Page 203 and 204:
The things we call atoms today are
Page 205 and 206:
If they come up on SAT II Physics,
Page 207 and 208:
will move in the opposite direction
Page 209 and 210:
Work The work done to move a charge
Page 211 and 212:
Much like gravitational potential e
Page 213 and 214:
3. . A particle of charge +2q exert
Page 215 and 216:
7. . A particle of charge +q is a d
Page 217 and 218:
The vector sum of the three vectors
Page 219 and 220:
Voltage The batteries we use in fla
Page 221 and 222:
This equation tells us that we can
Page 223 and 224:
If the two variables you know are a
Page 225 and 226:
However, each resistor causes a vol
Page 227 and 228:
So = 4 . WHAT IS THE CURRENT RUNNIN
Page 229 and 230:
Consider again the circuit whose to
Page 231 and 232:
This circuit consists of resistors
Page 233 and 234:
The junction rule deals with “jun
Page 235 and 236:
across the loop. We can express the
Page 237 and 238:
capacitance is halved. The proporti
Page 239 and 240:
The Greek letter is called the diel
Page 241 and 242:
4. . Two resistors, and , are ident
Page 243 and 244:
10. . A dielectric is inserted into
Page 245 and 246:
The equivalent capacitance of two c
Page 247 and 248:
The Earth itself acts like a huge b
Page 249 and 250:
Because the velocity vector and the
Page 251 and 252:
A particle with a positive charge o
Page 253 and 254:
The constant is called the permeabi
Page 255 and 256:
1. . The pointer on a compass is th
Page 257 and 258:
7. . A positively charged particle
Page 259 and 260:
1. B To solve this problem, it is h
Page 261 and 262:
If the particle is to move at a con
Page 263 and 264:
flowing in the counterclockwise dir
Page 265 and 266:
Next, let’s calculate the flux th
Page 267 and 268:
Remember that field lines come out
Page 269 and 270:
Magnetic Flux Faraday’s Law / Len
Page 271 and 272:
5. . A wire carrying 5.0 V is appli
Page 273 and 274:
In this equation, A is the amplitud
Page 275 and 276:
Ernst attaches a stretched string t
Page 277 and 278:
A string is tied to a pole at one e
Page 279 and 280:
other. The principle of superpositi
Page 281 and 282:
Nodes The crests and troughs of a s
Page 283 and 284:
The Doppler Effect So far we have o
Page 285 and 286:
Practice Questions 1. . Which of th
Page 287 and 288:
6. . Two pulses travel along a stri
Page 289 and 290:
1. B Simple harmonic motion is defi
Page 291 and 292:
where and are the frequency heard b
Page 293 and 294:
A higher frequency—and thus a sho
Page 295 and 296:
The phenomenon of refraction result
Page 297 and 298:
Since we know that the ratio of / i
Page 299 and 300:
The four basic kinds of optical ins
Page 301 and 302:
You can test all this yourself with
Page 303 and 304:
Because is a positive number, we kn
Page 305 and 306:
As the diagram shows us, and as the
Page 307 and 308:
At any point P on the back screen,
Page 309 and 310:
Note that the pattern is brightest
Page 311 and 312:
One of the more common ways of test
Page 313 and 314:
3. . When the orange light passes f
Page 315 and 316:
9. . Sound waves do not exhibit pol
Page 317 and 318:
7. E Only concave mirrors and conve
Page 319 and 320:
For people who believed that light
Page 321 and 322:
What does this all mean? Time is re
Page 323 and 324:
A spaceship flying toward the Earth
Page 325 and 326:
Rutherford’s Gold Foil Experiment
Page 327 and 328:
The Wave Theory of Electromagnetic
Page 329 and 330:
The Problem with Rutherford’s Mod
Page 331 and 332:
Don’t worry: you don’t need to
Page 333 and 334:
A hydrogen atom is energized so tha
Page 335 and 336:
where is the uncertainty in a parti
Page 337 and 338:
electrons have mass, it is so negli
Page 339 and 340:
chapters on mechanics are the resul
Page 341 and 342:
You won’t need to calculate the n
Page 343 and 344:
Photoelectro n Radius of Electron O
Page 345 and 346:
5. . An electron is accelerated thr
Page 347 and 348:
according to the formula , where l
Page 349 and 350:
In radioactive substances, the numb
Page 351 and 352:
A scale for measuring temperature,
Page 353 and 354:
The points of maximum displacement
Page 355 and 356:
Electromagnetic spectrum The spectr
Page 357 and 358:
The amount of time it takes for one
Page 359 and 360:
Given the period, T, and semimajor
Page 361 and 362:
The substance that is displaced as
Page 363 and 364:
A back-and-forth movement about an
Page 365 and 366:
Refracted ray Refraction Restoring
Page 367 and 368:
T Tail Tangent A body or set of bod
Page 369 and 370:
Weber Weight The force involved in
Page 371 and 372:
pinpointing what you need to study
Page 373:
If you got a question wrong because
show all

Introduction to SAT II Physics - FreeExamPapers

Create successful ePaper yourself

Delete template?

Save as template?