Download AC HPAT Physics| 50 Actual Questions and Answers 100% Correct| Latest Update 2025 and more Exams Physics in PDF only on Docsity!
AC HPAT Physics| 50 Actual Questions and Answers
100% Correct| Latest Update 2025
DIstance ✔✔· Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.
Displacement ✔✔· Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
Position ✔✔· Position is a place where someone or something is located or has been put. In physics, position is usually a number on an axis. .... Position is a vector, because direction matters. But distance is a scalar. Distance is how far you've traveled.
Speed ✔✔· Speed is the distance traveled per unit of time. It is how fast an object is moving. Speed is the scalar quantity that is the magnitude of the velocity vector. It doesn't have a direction.
Acceleration ✔✔· Acceleration is the rate of change of velocity with time.
Instantenous velocity ✔✔· Instantaneous velocity is the velocity of an object in motion at a specific point in time. This is determined similarly to average velocity, but we narrow the period of time so that it approaches zero. If an object has a standard velocity over a period of time, its average and instantaneous velocities may be the same.
A force ✔✔a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull
Net force ✔✔· Net force is the vector sum of forces acting on a particle or body. The net force is a single force that replaces the effect of the original forces on the particle's motion. It gives the particle the same acceleration as all those actual forces together as described by the Newton's second law of motion.
Uniform vs. non-uniform motion ✔✔· Difference between uniform and non-uniform motion with examples. In Uniform motion, movement of a body is along the straight line with constant speed. In non uniform motion, movement of a body is along the straight line with variable speed. In uniform motion, body covers equal distance in equal interval of time
What is the difference between constant, instantaneous, and average speed? ✔✔· constant speed is where the speed is the same throughout and instantaneous speed is speed given at any moment and average speed is a total distance traveled divided by the amount of time it took to travel it.
Newtons Laws ✔✔Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
The third law states that for every action (force) in nature there is an equal and opposite reaction.
Coefficient of friction ✔✔· A coefficient of friction is a value that shows the relationship between two objects and the normal reaction between the objects that are involved. .... The coefficient of friction depends on the objects that are causing friction. The value is usually between 0 and 1 but can be greater than 1.
Torque ✔✔Torque is a measure of the force that can cause an object to rotate about an axis. Just as force is what causes an object to accelerate in linear kinematics, torque is what causes an object to acquire angular acceleration. Torque is a vector quantity
Mechanical advantage ✔✔· Mechanical advantage is the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
Input vs output force ✔✔· The difference between the two is very simple to understand: Input Force represents the amount of force that you put into another object. Output Force represents the force that a specific object has as a result of the input force.
Gravitational force ✔✔· The gravitational force is a force that attracts any two objects with mass. .....In fact, every object, including you, is pulling on every other object in the entire universe! This is called Newton's Universal Law of Gravitation.
Energy ✔✔· Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.
Permanent Magnet ✔✔· A permanent magnet is a ferromagnetic material that possesses permanent magnetic properties, even when it is not located within a magnetic field. One end of the magnet is called the north pole, the other the south pole.
Electromagnet ✔✔· An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.
magnetic field ✔✔· A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity.
Motor Principle ✔✔the motor principle states that the current-carrying wire should experience a force perpendicular to both the magnetic field and the direction of the current, which in this case was horizontal.
Ohm's Law ✔✔· Ohm's law is a law that states that the voltage across a resistor is directly proportional to the current flowing through the resistance. Ohm's law is named for German physicist Georg Ohm (1789-1854). A simple formula, Ohm's law, is used to show the relationship of current, voltage, and resistance.
Kirchoff's Law ✔✔· Kirchhoff's Laws are: A hot solid, liquid or gas, under high pressure, gives off a continuous spectrum. A hot gas under low pressure produces a bright-line or emission line spectrum. A dark line or absorption line spectrum is seen when a source of a continuous spectrum is viewed behind a cool gas under pressure.
Law of magnetism ✔✔The most basic law of magnetism is that like poles repel one another and unlike poles attract each other; this can easily be seen by attempting to place like poles of two magnets together.
Conventional current ✔✔· assumes that current flows out of the positive terminal, through the circuit and into the negative terminal of the source ..... Electron Flow is what actually happens, and electrons flow out of the negative terminal, through the circuit and into the positive terminal of the source
Oersted's Law ✔✔· Ørsted's law, or Oersted's Law states that when a steady electric current pass through a wire it creates a magnetic field around it.
Motor ✔✔· A motor is an electrical machine which converts electrical energy into mechanical energy. The principle of working of a DC motor is that "whenever a current carrying conductor is placed in a magnetic field, it experiences a mechanical force".
gravitational potential energy ✔✔· Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.
Kinetic energy ✔✔The kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
Chemical Energy ✔✔· Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place. Usually, once chemical energy has been released from a substance, that substance is transformed into a completely new substance.
Enerfgy conversion/transformation ✔✔· the process of changing one form of energy to another. In physics, the term energy describes the capacity to produce certain changes within a system, without regard to limitations in transformation imposed by Entropy.
Boyles Law ✔✔· Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when temperature is held constant.
Volumetric flow rate ✔✔· the volumetric flow rate (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes V̇). The SI unit is cubic metres per second (m3/s).
Pascals Law ✔✔· Pascal's law basically states that any pressure applied to a fluid inside a closed system will transmit that pressure equally in all directions throughout the fluid. This law is the basic principle that causes hydraulic power in heavy construction machines to work.
Bernoulli's Principle ✔✔· Bernoulli's principle is an idea of fluid dynamics. It says that as speed of the fluid increases, pressure decreases. For a steady flow, the amount of fluid entering the pipe must equal the amount leaving the pipe, so the fluid speed in the thin part must increase.
