Category: Physics

How fast does a speaker vibrate? A woofer’s typical range is from <50 Hz – 100 Hz to about 2,000 Hz – 5,000 Hz. Again, this depends on the speaker’s design and whether the speakers are designed to work with a sub. So woofers, generally speaking, vibrate between 50 to 5,000 times per second. How […]

Which is hotter 100C or 100k? the higher temperature would be 100c since when you use the fromulas to convert them the other two are lower. 100F = 37.8 C and 310.7K. 100C = 237.6F and 373K. thank you so much! Is 1c equal to 1K? Zero on the Celsius scale (0°C) is now defined […]

Why pressure is a tensor quantity? Pressure is part of that tensor. It’s sort of like a component of a tensor. It’s a bit like how speed is the magnitude part of the velocity vector. Similarly, pressure is not a tensor, stress is a tensor. Why are tensors so difficult? There’s also “tensor” as used […]

Why headrests are detachable? The headrest of car seats is deliberately detachable and sharp so you can use it to break the glass in your car in case of emergency. The glass in car windows is also kept easily breakable from the inside so people can get their way out of cars during an emergency […]

What is the influence of society and culture in development of gender roles? Gender roles are culturally influenced stereotypes which create expectations for appropriate behavior for males and females. Gender roles are influenced by the media, family, environment, and society. A child’s understanding of gender roles impacts how they socialize with their peers and form […]

What does magnetic flux depend on? Faraday’s law states that the EMF induced by a change in magnetic flux depends on the change in flux Δ, time Δt, and number of turns of coils. Does magnetic flux depend on area? Magnetic flux depends on the shape of the surface and on the enclosed current. How […]

How fast would the moon need to travel in order to escape? List of escape velocities Location Relative to Ve (km/s) On the Moon The Moon’s gravity 2.38 On Mars Mars’ gravity 5.03 On Ceres Ceres’s gravity 0.51 On Jupiter Jupiter’s gravity 60.20 Which factor affects the escape speed? The force of gravity affects many […]

What started the Devonian period? 419.2 (+/- 3.2) million years ago What caused the mass extinction of the Devonian period? The causes of these extinctions are unclear. Leading hypotheses include changes in sea level and ocean anoxia, possibly triggered by global cooling or oceanic volcanism. The impact of a comet or another extraterrestrial body has […]

How long should a proper warm up lasts? Warming up pumps nutrient-rich, oxygenated blood to your muscles as it speeds up your heart rate and breathing. A good warm-up should last five to 10 minutes and work all major muscle groups. For best results, start slowly, then pick up the pace. What benefits are gained […]

What R-value sleeping pad do I need? Insulation and R-Value The higher a pad’s R-value, the better it will insulate you from cold surfaces. Sleeping pad R-values range from less than 2 (minimally insulated) to 5.5 or more (very well insulated). What are the 4 types of grants? There are actually just four main types […]