<p>The voltage across the capacitor is 1.5 V. This is because it is an extended period of time.
So as a result, the capacitor will act like a broken wire. In order for this to happen, in needs to match the voltage of the battery, which is 1.5 V. </p>
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<p>^APushed96 You just made my day! I thought I put down like 1.5v, which I thought at first was the emf of the battery… Later others in the thread are saying 12v, which made me really worried. Thank you so much for pointing out that the voltage of the battery is 1.5V…</p>
<p>btw, if you don’t mind, would you please send me some of your AP lang materials?</p>
<p>Can someone make a consolidated list of questions?</p>
<p>wat were the answers for the Part A questions which show forces acting on a block on an inclined plane and ask you ‘which block will accelerate up?’ and ‘which block will move down at constant velocity?’</p>
<p>For the first force one, I put F directed up the plane and going past the end of the quadrilateral, and for the second one I put f directed up the plane and completing the quadrilateral.</p>
<p>If the block is moving down at constant velocity, the horizontal Fnet=0 right?
So the force acting downwards is F + mgsin(x)
And the force acting upwards is friction
so F+mgsin(x) = friction
Doesn’t this mean F vector should be shorter than the friction vector?</p>
<p>The friction vector is longer than the F vector, but it still completes the quadrilateral. The quadrilateral is just the sum of all the forces, so F_net = 0 means that the sum has to be 0 (ie the quadrilateral ends up where it started)</p>
<p>was there an answer choice in which f and F vectors had same length…?? I think I chose that one…</p>
<p>Maybe, I don’t really remember</p>
<p>@jansatomg: Let me first consolidate all the test materials first! ;)</p>
<p>Oh yeah. Because the block is accelerating upward, the forces are unequal, so the F arrow should be extending past the quadrilateral. For the second question, because the velocity is constant, forces are balanced which means that it forms the quadrilateral.</p>
<p>Rate of heat transfer – increase T<em>c
Relativity (ship at 0.5c) – length decreases, time increases
Inclined plane – 105 J of KE at the bottom
Time that should be used in experiment – 4.1 s
Reason for discrepancies – air resistance
Image formed by a plane mirror – same size, virtual, upright
Scientist who didn’t deal with light waves – Copernicus
Rutherford experiment – positive charge resides in a small cluster
Reason why stars are at a different position than they seem – refraction
Force with constant mass and force due to spring – both y = k * x
Inverse square relationship – gravitational force and intensity of light waves
Ice, water, and water vapor in a box together – they will reach the same temperature
Double slit experiment with different frequencies – same intensity, different color
Train moving one – d and v</em>x are the same
Automobile engine – heat is expelled into the atmosphere
Ratio of nodes to antinodes in the fundamental frequency of a closed pipe – 1:1
M vs 2M block pendulums – 2M has twice as much PE, both have the same speed at the bottom
Doubling resistance and voltage in a circuit – current stays the same
Gravitation between Earth and the moon if Earth’s diameter is doubled with the same mass – unchanged
Tension in elevator with constant velocity – 250N
Tension in elevator accelerating downward – less than 250N
Tension when elevator breaks – 0N
Three particles in a cluster, one goes east and another south – third goes to quadrant II at 5 m/s
Circuit asking what is misplaced – ammeter misplaced
Current in resistor in circuit with 6ohm total resistance, 12V battery – 2A
Rate of heat loss – 8*10^6 J/hr
Sound of a bell getting softer – damping
Red light being refracted less – index of refraction of glass for red frequency is less
Fundamental frequency of closed pipe when same length open is 100Hz – 50Hz
Spiral pipe direction – tangent but falling
Methods of heat transfer – conduction, convection, radiation
Atom absorbed in box with 2 H atoms – one goes to 4eV state, other in ground state
Lenz’s law one – direction changes
Redirection of light rays in box – plane mirror
Voltage drop across capacitor when charged – emf of battery (12V?)
Inclined plane, F pushing up – F to the left, greater than f
Inclined plane, falling at constant velocity – f to the left, completing quadrilateral
Velocity of harmonic oscillator graph: sinusoid
Graph of speed when leaf is dropped in a vacuum – linear increasing
Graph of speed when something is dropped off a building – increasing but plateauing, sort of logarithmic
Graph of speed when a ball is thrown up and then falls – decreasing to 0, then increasing</p>
<p>Anyone disagree?</p>
<p>“Three particles in a cluster, one goes east and another south – third goes to quadrant II at 5 m/s”</p>
<p>Shouldn’t this be 5m/s quadrant 4?</p>
<p>Well there has to be westward momentum to counter the eastward momentum of one of the other particles</p>
<p>So many careless errors! :-(</p>
<p>So I skipped 6 and I think I got 8 wrong…what would be my scaled score? :(</p>
<p>@APushed, the Physics curve is very forgiving. You’ll probably get like a 790…</p>
<p>What do you think the lowest raw score will be for an 800? I didn’t skip any but I know I got 9 wrong. I may have gotten 1 or 2 more wrong that I can’t remember though.</p>
<p>“Inclined plane, falling at constant velocity – f to the left, completing quadrilateral”</p>
<p>Can someone draw this please? I dont quite understand…</p>
<p>I got raw score of -12 so far… Hope the curve is lenient… Everyone’s saying it was a hard test</p>
<p>Well normally, the min raw for a 800 is 60/75. If this test WAS ACTUALLY hard then maybe it will go down by 1-2 points?</p>