Category: Physics

What is the relationship between speed and torque? Torque is the rotational equivalence of linear force. Speed measures the distance covered in unit time. The relation between torque and speed are inversely proportional to each other. The torque of a rotating object can be mathematically written as the ratio of power and angular velocity. Why […]

Can mass actually be destroyed? The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form. Mass is also not generally conserved in open systems. Such is the case when various forms of energy and matter are […]

Why electric field is created? Electric fields originate from electric charges, or from time-varying magnetic fields. The electric field is defined mathematically as a vector field that associates to each point in space the (electrostatic or Coulomb) force per unit of charge exerted on an infinitesimal positive test charge at rest at that point. What […]

What is the importance of our nature? Why it’s important that we value nature Our forests, rivers, oceans and soils provide us with the food we eat, the air we breathe, the water we irrigate our crops with. We also rely on them for numerous other goods and services we depend on for our health, […]

What statement is true of liquids? A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with […]

What are four ways that waves interact with matter? Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. The types of interactions are reflection, refraction, and diffraction. Each type of interaction is described in detail below. What is the measure of energy in a wave? Amplitude […]

What is the mirror image of a line? A transformation where every point on a line segment appears an equal distance on the other side of a given line – the line of reflection. Every point on the line segment AB is “reflected” in the mirror and appears on the other side of the line […]

What is E F Q used for? The strength of an electric field E at any point may be defined as the electric, or Coulomb, force F exerted per unit positive electric charge q at that point, or simply E = F/q. What is meant by charge is quantised? So, the charge is quantised means […]

What is a real life example of mass? For instance, a person or object may be weightless on the moon because of the lack of gravity, but that same person or object maintains the same mass regardless of location….Mass of Everyday Objects. Everyday Object Mass pencil 0.0085 kg cell phone 0.141 kg book 0.34 kg […]

What are beats give the theory of beats derive the expression for beat frequency? The beat frequency is equal to the complete value of the alteration in the frequency of the two waves. The count of beats per second is equivalent to the difference in frequencies of two waves is called beat frequency….Beat Frequency Formula: […]