Multiple choice Definition and 158 Threads

A boy traveling on a skateboard steps off the board perpendicular to its motion. After stepping off, the boy lands on the ground and comes to rest. Which one of the following statements is INCORRECT? A The boy exerts an impulse on the ground on impact B The ground exerts an impulse on the...

I'm doing some practice multiple choice questions for my class and I would like to check my answers for some ones I wasn't entirely sure about. Any explanations would be really helpful. 1)What is the acceleration of an object of mass 4.5*10^-5 kg with a charge of 9*10^-9 C under the influence...

What must be true for two objects of the same material to have the same internal energies? (Choose all that apply) a. The masses of both objects must be equal b. Both objects must have the same density c. The temperatures of both objects must be equal d. Separate objects cannot have...

Homework Statement Multiple choice question about a modulus function, which statement is false? Below is the multiple choice question about a modulus function (the domain of the function is all reals): Which one of the following is not true about the function f(x)= | 2x+4 | : A. The...

Homework Statement 1. If A is a real symmetric matrix, then there is a diagonal matrix D and an orthogonal matrix P so that D = P T AP. a. True b. False 2. Given that λi and λj are distinct eigenvalues of the real symmetric matrix A and that v1 and v2 are the respective eigenvectors associates...

Hi can someone please help me with these multiple choice questions A sphere of mass M, radius r, and rotational inertia I is released from rest at the top of an inclined plane of height h as shown above. 1. If the plane is frictionless, what is the speed vcm, of the center of mass of...

Determine whether the given set S is a subspace of the vector space V. A. V=P5, and S is the subset of P5 consisting of those polynomials satisfying p(1)>p(0). B. V is the vector space of all real-valued functions defined on the interval [a,b], and S is the subset of V consisting of those...

Here is the question 5. A long board is free to slide on a sheet of frictionless ice. As shown in the top view above, a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation, which of the following occurs? A) Linear momentum is...

A standing wave pattern is created on a guitar string as a person tunes the guitar by changing the tension in the string. Which of the following properties of the waves on the string will change as a result of adjusting only the tension in the string? 1) Speed of the traveling wave that...

On a level practice range, a 46 g golf ball is struck by a golf club and leaves teh ground witha speed of 72 m/s at an angle 40 degrees above the horizontal. how much work was done by the golf club on the golf ball? a. 32 J b. 120 J c. 230 J d. 520 J e. 3300 J It's just...

a strobe photograph of a car moving along a straight road shows the interval between each successive image to be diminishing. If the direction of motion of the car is taken as positive, which of the following are negative? a. the speed of the car b. the average velocity of the car c. the...

Homework Statement The moment of inertia of a sphere rotating about an axis through its center is (2/5)MR^2, where M is the mass and R is the radius of the sphere. What is the moment of inertia of the sphere about an axis on the edge of the sphere? a. 0.4 MR^2 b. 1.4 MR^2 c. 0.9 MR^2...

#1) A child ties a .25kg rock to the end of a string and whirls it at a constant speed in a horizontal circle of radius 75 cm. What, approximately, is the maximum speed at which the stone may be whirled if the string will break for a tension exceeding 300N? A. 10 m/s B. 13 m/s C. 15...

Homework Statement 1. Which of the following is not a linear transformation from 3 to 3? a. T(x, y, z) = (x, 2y, 3x - y) b. T(x, y, z) = (x - y, 0, y - z) c. T(x, y, z) = (0, 0, 0) d. T(x, y, z) = (1, x, z) e. T(x, y, z) = (2x, 2y, 5z) 2. Which of the following...

Homework Statement Somehow Larry got stuck in the middle of a room with a frictionless floor. Larry is at rest. How could Larry start moving to get to the edge of the room? A. Push on the floor with his hands or feet. That way the floor could exert a force on him and Larry could...

Homework Statement a piece of metal of 10cm X 20 cm X 5 cm is sitting flat on the bottom of water basket, with one of the 10cm X 20cm sides facing up. the metal has density of 19.3 g/cm3. The basket is filled with water(full). The backet has a radius of 0.25m and a hight of 1m, density of...

1. A ball rolls of the edge of a horizontal roof at 10.0m/s. Two seconds later the speed of the ball will be... a)9.80 b)10.0 c)19.6 d)29.6 e)none 2. Two forces of 10 N each act on an object. the angle between the forces is 120degrees. the magnitude of the resultant force on the object...

Consider Gauss's law: \oint \vec{E}\cdot d\vec{a} =\frac{Q_{enc}}{\epsilon_0} . Which of the following is true? A. E Must be the electric field due to the enclosed charge B. If q=0 then E=0 everywhere on the Gaussian surface C. If the charge inside consists of an electric dipole, then the...

Homework Statement 1.Reflection goes with a. longitudnal wave b.trasnsverse wave c. both d.neither 2. if mass of teh bob on a springs are increased, howe whould that affet the period of the vibrations? 3. if a spring is released fr. progressively larger displacments, how owould this...

Does anyone have a link or multiple choice questions for old AP physics B or C?

1. Which rolls to the bottom of a hill sooner, a car tire alone or the same tire mounted on a rim? a. The mounted tire, provided the tire is more massive than the rim b. The tire alone, provided it is as heavy as the rim c. The mounted tire, provided the tire is as heavy as the rim d. The...

Homework Statement Which of the following is a correct statement about gravitational force? A. It is applicable only to our solar system. B. It is both an attractive and repulsive force. C. It is directly proportional to the product of the masses involved. D. It is directly proportional to...

I bolded the answer I think is correct - I'm just a little unsure on these, any help would be appreciated! 1. A capacitor and resistor are connected in a series with a batter and a switch. The instant after the switch is closed A. the voltage across the resistor is equal to the emf of the...

Homework Statement Problem 1 If all of the particles shown in the figure are electrons, what is the direction of the magnetic field that produced the indicated deflection? http://session.masteringphysics.com/problemAsset/1013281/5/jfk.Figure.24.Q35.jpg Choices Up (toward the top of the...

Homework Statement Work is done on an object far out in space where it has negligible gravitational-PE. If in the process there is no net change in KE, we can conclude a) friction may have been operative b) this situation is impossible c) the energy of the object has decreased d) the...

The question is here: http://dl.getdropbox.com/u/175564/logic.png The correct answer is D. My attempt to the problem: Let the beginnings of the sentences be A. In a, A is B -/-> C is D. In b, A is B -/-> C is D. These first two do not make sense. in c and d, the word "only" suggests...

[SOLVED] [Multiple Choice] ...wavelength of an object. de Broglie wavelength 1. THE PROBLEM STATEMENT MULTIPLE CHOICE Which of the following would you expect to have the largest wavelength associated with it? (A) a quick-moving bee (B) an electron orbiting a nucleus (C) a slowly lumbering...

Homework Statement Which is true about the method find? //Return TreeNode with target value, or null if target not found public static TreeNode find(TreeNode root, Comparable target) { if(root == null) return null; else if(target.compareTo(root.getValue()) == 0)...

Homework Statement Hey guys i was taking some practice excercises and was wondering if someone could give me the answers to the following: 1.The following questions are about this experiment in which a test-mass moves in a horizontal circle at constant speed. What is the direction of the...

Hey guys i was taking some practice excercises and was wondering if someone could give me the answers to the following: 1.The following questions are about this experiment in which a test-mass moves in a horizontal circle at constant speed. What is the direction of the test-mass...

A capacitor is first connected to a 6.0 V battery and then disconnected and connected to a 12.0 V battery. How does the charge on one of its plates change: (a) It increases, (b) it decreases, or (c) it 1stays the same? (c) (because the charge on the plate is depending upon...

[SOLVED] Current and Drift Velocity (multiple choice) 1. In a dental X-ray machine, the movement of accelerated electrons is east. The current associated with these electrons is in what direction: (a) east, (b) west, or (c) zero? 3. At first I thought it was B (west) because...

Homework Statement A man pushes an 80 N crate a distance of 5.0 m upward along a frictionless slope that makes an angle of 30° with the horizontal. The force he exerts is parallel to the slope. If the speed of the crate is constant, then the work done by the man is: a) 61 J b) 200 J c)...

Match the reaction type with the reaction: AnSwErS: A) Synthesis B) Single Replacemet C) Double Replacement D) Combustion E) Decomposition Problems: 1. 2Na + Cl2 2NaCl 2. 4NaF + O2 2Na2O + 2F2 3. 4LiH + AlCl3 3LiCl + LiAlH4 4. 2H2O 2H2 + O2

Homework Statement Which one of the following statements is NOT true for a rotating CD undergoing angular acceleration? A) The angular speed is the same at any point on the disk B) The lnear speed is the same at any point on the disk C) The angular accerlation is perpendicular to the...

Kinematics Question (Speed, velocity and acceleration) Homework Statement For each of the following situations below circle the appropriate signs for each quantity listed. Assume east is + and west is - (see photo below) Homework Equations None I believe The Attempt at a...

Homework Statement Two small light bulbs are placed close together to try and create an interference pattern. This pattern would not be visible due to the: a. random phase differences between the light waves from the two sources b. very high speed of the light waves c. diffraction of the...

Homework Statement If f is a continuous real valued function, then the def integral from 0 to 1 of f(x)dx = a. limit as n-> + infinity of 1/n * the sumation from k=0 to n-1 of f(k/n) b. limit as n-> + infinity of the sumation from k=1 to n of (1/k)*f(k/n) c. limit as n-> + infinity of...

Here are some muliple choice questions I am stuck on. Thanks in advance for help anyone can give me. 1) A falling object that has reached its terminal speed continues to gain? a.speed b.both speed and acceleration c.acceleration d.neither speed nor acceleration. I think the answer is D...

Homework Statement A rocket moves through empty space in a straight line with constant speed. It is far from the gravitational effect of any star or planet. Under these conditions, the force that must be applied to the rocket in order to sustain its motion is ? The Attempt at a Solution I...

[SIZE="3"][FONT="Georgia"]Hey, I have to answer the following multiple choice questions ... its relevant to my exam which is day after tomorrow. Can anyone please tell which options should be the answers and why... I don't have any clue about these. So please don't delete this post ... instead...

Hello everyone, I'm confused on what the answer is here, it looks like he circled every answer but i don't see how that's possible. So maybe he cirlced c and b and marked a and b wrong. http://suprfile.com/src/1/3pyqpub/lastscan.jpg How would I test to verify that c and d are correct? if b1 =...

What is the answer to this question(see attachment) ? i thought the answer was (B) but it is (C)

question In a particular experiment a long length of copper wire of very low resistance is rotated by two students. The ends of the wire are connected to a galvanometer, G, and a current is detected. Which of the following is LEAST likely to affect the amount of current produced? (A) The...

Ok guys, I've got a few multiple choice questions I'm having trouble with... 1. If the current increases in a solenoid, the induced emf acts to... A. increase the flux B. decrease the flux C. either increase or decrease the flux D. have no affect of the flux ----I'm thinking B...

Ok guys, I’ve got a few multiple choice questions I need help with. Here they are, and thank you in advance! All I know for this one is……Ql/Qh = Tl / Th Leaning towards B. 1. In a Carnot cycle A. Qh > Ql * Th/Tl B. Qh = Ql * Th/Tl C. Qh < Ql * Tl/Th D. Qh = Ql * Tl/Th We are able...

hey, I'm currently in grade 12, and so far we just started a review over the conservation laws unit, which includes (energy related theorm, work, power, momentum, collisions, mechanical energy ect.) Anyways I can't seem to figure out these two multiple choice theory questions, was hoping...

Can anybody help me on this question, I'm stuck. I have a picture attached for clarification. Consider two concentric spherical conducting shells. O is at the center of the shells. THe inner shell has radius a and charge q1 on it, while the outer shell has radius b=3a and charge q2 on it...

Hi guys, I need help with the following problem I couldn't figure out: 1) A block of mass 2 kg slides along a horizontal tabletop. A horizontal applied force of 12 N and a vertical applied force of 15 N act on the block. If the coefficient of kinetic friction between the block and the table...

Two balls of masses m1 and m2 are moving along x-axis w/ velocities, v1>v2>0. After transforming from the lab frame to the center-of-mass frame, what are the velocities of m1, v1com, and mass m2, v2com? Vcom is the center of mass velocity for the system of both balls. The choices are...