Description : In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted
Last Answer : ANSWER: W -- LONGER THAN l
Description : The collision between a photon and a free electron was first explained by which of the following scientists? w) Einstein x) Heisenberg y) Compton z) Bohr
Last Answer : ANSWER: Y -- COMPTON
Description : Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of ... that lost by the other z) the total kinetic energy before and after the collision remains constant
Last Answer : ANSWER: Z -- THE TOTAL KINETIC ENERGY BEFORE AND AFTER THE COLLISION RE
Description : In a collision, which of the following four quantities is always conserved? w) momentum x) kinetic energy y) torque z) moment of inertia
Last Answer : ANSWER: W -- MOMENTUM
Description : In any collision, which of the following is conserved: w) kinetic energy x) velocity y) momentum z) potential energy
Last Answer : ANSWER: Y -- MOMENTUM
Description : In changing from an energy state of -1.51 electron-volts to -3.40 electron-volts, an atom emits a photon whose energy is: w) 1.51 electron-volts x) 1.89 electron-volts y) 3.40 electron-volts z) 4.91 electron-volts
Last Answer : ANSWER: X -- 1.89 ELECTRON-VOLTS
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : Lenz's law is an example of the law of conservation of one of the following. Is it conservation of: w) mass x) charge y) momentum z) energy
Last Answer : ANSWER: Z -- ENERGY
Description : The first law of thermodynamics is concerned with the conservation of w) energy x) momentum y) charge z) matter
Last Answer : ANSWER: W -- ENERGY
Description : If an electron and a photon have the same wavelength, then they will have the same – (1) velocity (2) linear momentum (3) angular momentum (4) energy
Last Answer : (2) linear momentum Explanation: When a non-relativistic electron and a non-relativistic proton are moving and have the same de Broglie wavelength, then they will have the same linear mo-mentum p = mv.
Description : If an electron and a photon have the same wavelength, then they will have the same (1) velocity (2) linear momentum (3) angular momentum (4) energy
Last Answer : linear momentum
Description : Energy can neither created nor destroyed. It can only change forms. a. Conservation of Mass Principle b. Conservation of Energy Principle c. Conservation of Momentum Principle d. Conservation of Heat Principle
Last Answer : Conservation of Energy Principle
Description : During an INELASTIC collision, the colliding bodies w) lose kinetic energy x) keep the same amount of kinetic energy y) gains kinetic energy z) first lose, then gain kinetic energy
Last Answer : ANSWER: W -- LOSE KINETIC ENERGY
Description : The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon
Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON
Description : The ENERGY associated with a photon depends upon the photon's: w) velocity x) frequency y) amplitude z) the brightness of the source from which it comes
Last Answer : ANSWER: X -- FREQUENCY
Description : In a springy collision, if the fast moving trolley collides with a slow one, then the fast one will bounce back at speed of A. slow one B. less than slow one C. more than slow one D. with the same speed as before
Last Answer : slow one
Description : In elastic collisions, A. only the total momentum of the colliding objects is conserved. B. only the total kinetic energy is conserved. C. both of the momentum and total kinetic energy ... D. neither momentum of the colliding bodies nor the total kinetic energy are recoverable.
Last Answer : both of the momentum and total kinetic energy are conserved.
Description : The mass spectrograph directly yields a value for which one of the following? w) mass of a photon x) mass of a neutron y) masses of isotopes of elements z) mass to charge ratio of ions
Last Answer : ANSWER: Z -- MASS TO CHARGE RATIO OF IONS
Description : Which of the following indicates the shape of the orbital in which the electron moves? w) principal quantum number x) spin quantum number y) angular momentum quantum number z) none of these
Last Answer : ANSWER: Y -- ANGULAR MOMENTUM QUANTUM NUMBER
Description : Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy
Last Answer : ANSWER: W -- HAVE NEITHER REST MASS NOR CHARGE
Description : If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule
Last Answer : ANSWER: Y -- TOTAL MOLECULAR KINETIC ENERGY
Description : Which of the following pair are vector quantities? w) time and space x) force and momentum y) energy and time z) momentum and mass e) mass
Last Answer : ANSWER: X -- FORCE and MOMENTUM
Description : The GeV is a unit of: w) momentum x) energy y) velocity z) time
Last Answer : ANSWER: X -- ENERGY
Description : When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass
Description : An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE? w) Her moment of ... conserved. y) The skater does work when pulling in her arms. z) Angular momentum is increased.
Last Answer : ANSWER: Y -- THE SKATER DOES WORK WHEN PULLING IN HER ARMS
Description : According to the kinetic theory, the Kelvin temperature of an ideal gas is proportional to which one of the following. Is the temperature proportional to the gas's average molecular: w) velocity x) momentum y) kinetic energy z) potential energy
Last Answer : ANSWER: Y -- KINETIC ENERGY
Description : In an elastic collision, the RELATIVE velocities of separation of the two bodies after impact compared with the relative velocity of approach before impact is: w) always greater x) always smaller y) always the same z) first greater, then smaller
Last Answer : ANSWER: Y -- ALWAYS THE SAME
Description : A ball is moving with a speed v towards north, collides with an identical ball, moving with the same speed towards east. After the collision, the two balls stick together and move towards north –east. The speed of the combination is (a) 2v (b) 3v (c) v (d) v/2
Last Answer : Ans:(c)
Description : Which of the following laws validates the statement that matter can neither be created nor destroyed? (1) Law of conservation of energy (2) Le Chatelier's Principle (3) Law of conservation of mass (4) Law of osmosis
Last Answer : (3) Law of conservation of mass Explanation: The law of conservation of mass, also known as the principle of mass/matter conservation, states that the mass of an isolated system (closed to all ... out, its quantity cannot otherwise change over time (hence, its quantity is "conserved" over time).
Description : Which of the following laws validates the statement that matter can neither be created nor destroyed ? (1) Law of conservation of energy (2) Le Chatelier’s Principle (3) Law of conservation of mass (4) Law of osmosis
Last Answer : Law of conservation of mass
Description : Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid
Last Answer : ANSWER: Z -- REACTION OF POTASSIUM HYDROXIDE WITH NITRIC ACID
Description : A moving bullet hits a solid target resting on a frictionless surface and gets embedded in it. What is conserved in this process? (a) Both momentum and kinetic energy (b) Kinetic energy alone (c) Momentum alone (d) Neither momentum nor kinetic energy
Description : What two primary factors determine whether or no molecular collision leads to a chemical reaction? w) energy and volume of molecules x) energy and mass of molecules y) energy and orientation of molecules z) orientation and volume of molecules
Last Answer : ANSWER: Y -- ENERGY AND ORIENTATION OF MOLECULES
Description : Two cars collide head-on. They stop at the point of collision. Both cars must have one of the following. Do they have w) equal masses x) equal but opposite velocities before the collision y) equal but opposite momenta before the collision
Last Answer : ANSWER: Y -- EQUAL BUT OPPOSITE MOMENTA BEFORE THE COLLISION
Description : If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is A. elastic B. inelastic C. conserved D. not conserved
Last Answer : inelastic
Description : In a perfectly elastic collision, momentum and energy are A. not conserved B. conserved C. becomes zero after collision D. equal before collision
Last Answer : conserved
Description : In the Tyndall Effect, the intensity of scattered radiation is inversely proportional to the fourth power of the wavelength. Which one of the following colors of light would exhibit the most intense Tyndall scattering? w) yellow x) green y) orange z) violet
Last Answer : ANSWER: Z -- VIOLET
Description : An object in equilibrium always has zero: w) velocity x) momentum y) mass z) acceleration.
Last Answer : ANSWER: Z -- ACCELERATION
Description : Newton's first law is often referred to as which of the following? w) The law of straight-line motion. x) The law of momentum y) The law of inertia z) F = ma (Spell out M-A)
Last Answer : ANSWER: Y -- THE LAW OF INERTIA
Description : You are sitting in a frictionless barber chair. The barber decides to have some fun with you, so he spins the chair. As you spin, you find that you can slow down by extending your ... increased your angular momentum y) increased your moment of inertia z) changed the direction of the momentum vector
Last Answer : ANSWER: Y --INCREASED YOUR MOMENT OF INERTIA
Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero
Last Answer : ANSWER: Z -- ZERO
Description : Consider a car driving around a circular bend in the road. Which of the following CANNOT be constant? w) velocity of car x) speed of car y) nonrelativistic mass of car z) angular momentum of the car about the center of the circle
Last Answer : ANSWER: W -- VELOCITY OF CAR
Description : In physics, a radian per second squared is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.
Last Answer : ANSWER: Y -- ANGULAR ACCELERATION
Description : Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia
Description : Which of the following will increase the ANGULAR MOMENTUM of a person spinning on a rotatable frictionless bar chair? w) moving the arms closer to the body x) moving the arms farther from the body y) ... from the body and the other arm closer to the body with spastic repetition z) none of these
Last Answer : ANSWER: Z -- NONE OF THESE
Description : The inverse of wavelength is referred to as: w) wave number x) frequency y) velocity z) momentum
Last Answer : ANSWER: W -- WAVE NUMBER
Description : When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to? w) speed of light x) Plank's constant y) momentum z) wave number
Last Answer : ANSWER: W -- SPEED OF LIGHT
Description : A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4 meters per second. The ... .4 kilogram-meters per second y) 0.5 kilogram-meters per second z) 0.9 kilogram-meters per second
Last Answer : ANSWER: Z -- 0.9 KILOGRAM-METERS PER SECOND
Description : If the resultant force acting on a body of constant mass is zero, the body's momentum is: w) increasing x) decreasing y) always zero z) constant
Last Answer : ANSWER: Z -- CONSTANT
Description : In physics, a radian per second is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.
Last Answer : ANSWER: X -- ANGULAR VELOCITY