Category: Physics

Is 300 watts enough for a subwoofer? An aftermarket receiver — you might want 200 to 300 watts RMS of power. Amplified speakers with around 50 watts RMS per channel — 250 to 500 watts RMS is a good starting point. A system with 100 watts RMS per channel — having at least 1,000 watts […]

Why does my motorcycle helmet hurt my head? Your helmet may be slightly loose, or the fit is slightly off, it slips down on your forehead as you riding. You may simply be wearing the helmet in a wrong way. The thing is, it is possible that, even though the helmet is the right shape […]

Why is there no friction on ice? One of these theories is that friction causes the liquid layer of water to form on ice. Friction is the force that generates heat whenever two objects slide against each other. If you stand on ice without moving, no friction exists to generate heat, yet the ice is […]

Which is called the basic of science? Physics is also called “the fundamental science” because the subject of study of all branches of natural science like chemistry, astronomy, geology, and biology are constrained by laws of physics, similar to how chemistry is often called the central science because of its role in linking the physical […]

What time of day is oxygen highest? Even though there is an increase in carbon dioxide through the daytime on your block, oxygen is much more present at the beginning of the day. Is it normal for oxygen levels to fluctuate? It’s normal for oxygen saturation levels to fluctuate with activity. If your oxygen saturation […]

What is the application of science and technology in rural areas? There are several interventions for development and one such potential instrument is the “application of science and technology in rural areas (ASTRA)” which intends to transform rural areas towards development for sustainable and profitable livelihood. How does technology affect rural areas? Due to the […]

What can change wave speed? The speed of a wave is only altered by alterations in the properties of the medium through which it travels. The wavelength of a wave does not affect the speed at which the wave travels. Both Wave C and Wave D travel at the same speed. How is wave speed […]

What is the charge of the nucleus of an oxygen atom? +8 Are electrons found in the nucleus? Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus. Because opposite electric charges attract each other, negative electrons are attracted to the positive nucleus. […]

What is the reciprocal of a period? The reciprocal of the period, or the frequency f, in oscillations per second, is given by f = 1/T = ω/2π. What is cycle of a wave? A wave is a repeating pattern. It repeats itself in a periodic and regular fashion over both time and space. And […]

What is significance of uncertainty principle in our daily life? The Principle says that the position and the velocity of an object cannot both be measured exactly at the same time. At the size of objects seen in everyday life, such as a car, the Uncertainty Principle has no real application. We can accurately measure […]