Physics Electrostatics Level: High School
Gauss’s Law
The figure at “click here” shows 3 Gaussian surface and the electric flux through each . What are the three charges q1, q2, and q3 .
Physics Heat & Thermodynamics Level: High School
A match is placed in a oxygen-filled cylinder that has a movable piston . The piston is moved so quickly that no heat escapes as the match ignites . What kind of change is demonstrated in this process ?a) an isobaric change .
b) an adiabatic change .
c) an isothermal change .
d) an isochoric change .
e) a change of heat capacity .
Physics Alternating Current Level: High School
An ac voltage source that has a frequency f is connected across the terminals of a capacitor . Which one of the following statements correctly indicates the effect on the capacitive reactance when the frequency is increase to 4 f ?a) The capacitive reactance increases by a factor of four .
b) The capacitive reactance increases by a factor of eight .
c) The capacitive reactance is unchanged .
d) The capacitive reactance decreases by a factor of eight .
e) The capacitive reactance decreases by a factor of four .
Physics Heat & Thermodynamics Level: High School
Thermometry
Which one of the following properties could not be used as a temperature sensitive property in the construction of a thermometer ?a) The change in mass of a solid .
b) The change in volume of a liquid .
c) The change in length of a metal rod .
d) The change in electrical resistance of a wire .
e) The change in pressure of a gas at constant volume .
Physics Rotational Mechanics Level: High School
A rigid body rotates about a fixed axis with a constant angular acceleration. Which one of the following statements is true concerning the tangential acceleration of any point on the body ?a) Its magnitude is zero m/s^2.
b) It depends on the angular velocity .
c) It is equal to the centripetal acceleration .
d) It is constant in both magnitude and direction .
e) It depends on the change in the angular velocity .
Physics Kinematics Level: High School
A rock is dropped from a high tower and falls freely under the influence of gravity . Which one of the following statements is true concerning the rock as it falls ?a) It still gain an equal amount of momentum during each second .
b) It will gain an equal amount of kinetic energy during each second .
c) It will gain an equal amount of speed for each meter through which it falls.
d)It will gain an equal amount of momentum through which for each meter through which it falls .
The amount of momentum it gains will be proportional to the amount of potential energy that it loses .
Physics Rotational Mechanics Level: High School
Conservation of Angular Momentum
Danelle is moving in a spaceship at a constant velocity away from a group of stars . What happens when a spinning ice skater draws in her outstretched arms ?a) Her angular momentum decreases .
b) Her angular momentum increases .
c) Her moment of inertia decreases causing her to speed up .
d) Her moment of inertia decreases causing her to slow down .
e) The torque that she exerts increase her moment of inertia .
Physics Ray Optics Level: High School
Interference and Coherent sources
Which one of the following statements best explains why interference patterns are not usually observed for light from two ordinary light bulbs ?a) Diffraction effects predominate .
b) The two sources are out of phase .
c) The two sources are not coherent .
d) The interference pattern is too small to observe .
e) Light from ordinary light bulbs is not polarized .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a Moving Charge Particle in a Magnetic Field
Complete the following statement : The magnitude of the magnetic force that acts on the charged particle in a magnetic field is independent ofa) the sign of the charge
b) the magnitude of the charge
c) the magnitude of the magnetic field
d) the direction of motion of the particle
e) the velocity components of the particle .
Physics Current Electricity Level: High School
EMF of a Battery
Complete the following statement . The electromotive force isa) the maximum potential difference between the terminals of a battery
b) the force that accelerates electrons through a wire when a battery is connected to it .
c) the force that accelerates protons through a wire when a battery is connected to it .
d) the maximum capacitance between the terminals of a battery .
e) the maximum electric potential energy stored within a battery .
Physics Electrostatics Level: High School
Charging by Friction
Complete the following statement : When an ebonite rod is rubbed with animal fur , the rod becomes negatively charged as .a) positive charges are transferred from the fur to the rod .
b) negative charges are transferred from the rod to the fur .
c) negative charges are created on the surface of the rod .
d) negative charges are transferred from the fur to the rod .
e) Positive charges are transferred from the rod the fur .
Physics Heat & Thermodynamics Level: High School
A match is placed in an oxygen-filled cylinder that has a movable piston . The piston is moved so quickly that no heat escapes as the match ignites . What kind of change is demonstrated in this process ?a) an isobaric change
b) an adiabatic change
c) an isothermal change
d) an isochoric change
e )a change of heat capacity
Physics Heat & Thermodynamics Level: High School
Change of state
Complete the following statement : when a substance undergoes fusion it .a) freezes
b) sublimes
c) condenses
d) vaporizes
e) evaporates
Physics Properties Of Matter Level: High School
Stream Line Flow
Which one of the following statements concerning streamline flow is true ?a) At any given point in the fluid , the velocity is constant in time
b) Streamline flow occurs when there are sharp obstacles in the path of a fast moving fluid .
c) Streamline flow is described by Pascal’s principle.
d) Streamline flow is described by Archimedes Principle .
The velocity vectors are the same for all particles in the fluid .
Physics Electrostatics Level: High School
Which one of the following statement is true concerning the work done by an external force in moving an electron at constant speed between two points in an electrostatic field ?a) It is always zero joules .
b) It is always positive .
c) It is always negative .
d) It depends on the total distance covered .
It depends only on the displacement of the electron .