Systematic errors (zero errors) Zero errors are caused by faulty equipment that doesn’t reset to zero properly. Check before you start measuring that the measuring instruments read zero for zero input. A zero error would affect every reading you take. What is a zero error in physics? zero error Any indication that a measuring system […]
The resistor is the part of an electrical circuit that resists, or limits, the power of an electrical current in a circuit. The resistor also helps to reduce, or lessen, the amount of electricity moving through the circuit. What is resistance in physics for kids? Resistance – Resistance measures how well a material or object […]
Dry friction: the force that opposes one solid surface sliding across another solid surface. Fluid friction: the friction between layers of a viscous fluid in motion. Internal friction: the force resisting internal deformation of a solid material. What is viscous friction in physics? The viscous force F in Eq. 16.21 is the fluid analog of […]
A banked turn (or banking turn) is a turn or change of direction in which the vehicle banks or inclines, usually towards the inside of the turn. For a road or railroad this is usually due to the roadbed having a transverse down-slope towards the inside of the curve. What is difference between banked and […]
As it gains speed, the object’s weight stays the same but the air resistance on it increases. There is a resultant force acting downwards. Eventually, the object’s weight is balanced by the air resistance. There is no resultant force and the object reaches a steady speed โ this is known as the terminal velocity. What […]
The amount of time between two given times is known as time interval. In other words, it is the amount of time that has passed between the beginning and end of the event. It is also known as elapsed time. What is time interval example? A time interval is the amount of time between two […]
A thin flat circular magnet where the thickness does not exceed the diameter and there is a hole through the center. Ring magnets are commonly used when a mechanical attachment method is needed to secure the magnet. What is a ring magnet used for? Ring Magnets for All Types of Manufacturing & Holding Applications. Ring […]
startยทing fricยทtion the force that must be overcome to initiate the motion of one body relative to another because they have been resting in contact. Compare: dynamic friction. What is static friction in physics? In static friction, the frictional force resists force that is applied to an object, and the object remains at rest until […]
Shear force is a force acting in a direction that’s parallel to (over the top of) a surface or cross section of a body, like the pressure of air flow over an airplane wing. The word shear in the term is a reference to the fact that such a force can cut, or shear, through […]
Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out. What is a polar molecule class 12 physics? Polar molecules: The molecules in which “centre of […]
Shear A force that causes one part of a material to slide past another. Place a deck of cards on a table. Invite a kid to push sideways on the top part of the deck so the cards “smear” sideways, demonstrating the sliding action of shear force. What is shear force with example? Another example […]
The definition of a plane surface is: A two-dimensional and a perfectly flat surface which extends in all directions is known as a plane surface. A plane extends infinitely in two dimensions with no thickness. For e. g., a coordinate plane is an example of a plane surface. What is a plane surface called? A […]
Newton thought that light was composed of extremely subtle “corpuscles,” an idea reflected in the division of light into photons today. His use of multiple prism arrays, described in his Opticks, published in 1702, were arguably some of the initial experiments that led eventually to the development of tunable lasers. What is the definition of […]
Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another. The transfer or flow due to the difference in temperature between the two objects is called heat. What is the kid definition of heat […]
Solution : When light travels from a denser medium to a rarer medium, it is partially reflected, i.e.part of light comes back into the denser medium as epr the laws of reflection . This is called partial reflection of light. What is partial reflection and refraction? Partial Reflection and Refraction occurs when a wave is […]
In two dimensions, a force can be resolved into two mutually perpendicular components whose vector sum is equal to the given force. The components are often taken to be parallel to the x- and y-axes. In two dimensions we use the perpendicular unit vectors i and j (and in three dimensions they are i, j […]
A derivative is a rate of change which is the slope of a graph. Velocity is the rate of change of position; hence velocity is the derivative of position. Acceleration is the rate of change of velocity, therefore, acceleration is the derivative of velocity. What do you mean by partial derivative? partial derivative, In differential […]
Parity is a useful concept in both Nuclear Physics and Quantum Mechanics. Parity helps us explain the type of stationary wave function (either symmetric or asymmetric) that subatomic particles, like neutrons, electrons, or protons have. In simple words, parity is the reflection of coordinates about the origin. What is the parity of a particle? parity, […]
The individual torques add to produce a net torque about the axis. When the appropriate sign (positive or negative) is assigned to the magnitudes of individual torques about a specified axis, the net torque about the axis is the sum of the individual torques: โฯnet=โi|โฯi|. What is the unit for net torque? The SI unit […]
Nodes. A wave function node occurs at points where the wave function is zero and changes signs. The electron has zero probability of being located at a node. Because of the separation of variables for an electron orbital, the wave function will be zero when any one of its component functions is zero. What is […]
What Is a Natural Frequency? An object’s natural frequency is the frequency or rate that it vibrates naturally when disturbed. Objects can possess more than one natural frequency and we typically use harmonic oscillators as a tool for modeling the natural frequency of a particular object. What does natural frequency mean in science? The natural […]
Electricity. Lost volt: The potential difference between the two terminals of a cell decrease by an amount that does not contribute to the circuit, is called lost volt. Why does lost volts increase with current? As more current flows from a cell the rate of reaction in the cell increases and more heat is generated, […]
infrasonics, vibrational or stress waves in elastic media, having a frequency below those of sound waves that can be detected by the human earโi.e., below 20 hertz. The range of frequencies extends down to geologic vibrations that complete one cycle in 100 seconds or longer. What is infrasonic sound examples? Infrasound Sources Lee waves, Severe […]
Javelin throwing is a highly technical event and requires perfect coordination of multiple joints in different planes of motion. The distance a javelin is thrown is affected by factors such as wind speed and direction and the aerodynamics of the javelin. What forces act on a javelin? Force of gravity acts on the initial vertical […]
adjective. Britannica Dictionary definition of INVERSELY PROPORTIONAL. : related so that as one becomes larger the other becomes smaller. What is directly and indirectly proportional? In direct proportion, if one quantity is increased or decreased then the other quantity increases or decreases, respectively. But in indirect or inverse proportion, if one quantity increases then other […]
In general, an invisibility cloak works by diverting the path of light around an object so that it continues on the other side as if the object were not there. Is it theoretically possible to be invisible? The good news is that the new research confirms that invisibility is indeed possible. It may get more […]
Inertial mass is a measure of how difficult it is to change the velocity of an object. It is defined as ‘the ratio of force over acceleration’. Objects with a greater mass have greater inertia and so a greater resultant force will be required to cause the same acceleration. What is inertia and inertial mass? […]
The analytical method is more accurate than the graphical method, because the latter involves some extensive calculations. The analytical method is less accurate than the graphical method, because the former includes drawing all figures to the right scale. How do you do graphical method? Step 1: Formulate the LP (Linear programming) problem. Step 2: Construct […]