Category: Physics

What are the positive and negative signs in Kvl? Our sign convention for applying signs to the voltage polarities in our KVL equations will be as follows: when traversing the loop, if the positive terminal of a voltage difference is encountered before the negative terminal, the voltage difference will be interpreted as positive in the […]

What happens when waves that are out of phase combine? Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero. What does 90 degrees out […]

What does bungee jumping do to your body? Bungee jumping is, however, undeniably responsible for a range of serious medical complaints, including musculoskeletal pain in the neck and back, headaches, dizziness and blurred vision1. Thankfully, most of these symptoms have no lasting effects, yet there are tales of much rarer and more severe afflictions. Is […]

How do national parks protect the environment? National parks contain forested areas that not only protect water sources, they also help stabilize the surrounding land. This can save lives and infrastructure by preventing landslides, avalanches and erosion. These areas also reduce floods by keeping natural river basins intact and preserving wetlands. What are alternate ways […]

How do you know if a vessel is thin walled? Generally, a pressure vessel is considered to be “thin-walled” if its radius r is larger than 5 times its wall thickness t (r > 5 · t). What is the usual value of FOS for thin pressure vessel? Typical overall Factors of Safety Equipment Factor […]

What is an example of sustainable use? Renewable clean energy is probably the most obvious example of sustainability. Here are three examples. Solar energy: Once the sun’s electromagnetic radiation is captured, it produces electricity and heat. Wind Energy: Wind turbines convert the kinetic energy in the wind into mechanical power. Which is a sustainable practice? […]

What happens next depends on the mass of the star? About 75% of the mass of the star is ejected into space in the supernova. The fate of the left-over core depends on its mass. If the left-over core is about 1.4 to 5 times the mass of our Sun, it will collapse into a […]

Can you surf 2ft waves? A 2ft wave at 5 seconds will most likely result in small and weak waves. Swells that have a wave height of 8ft and a swell period of 22 seconds are going to be huge! However, an average swell report of 4ft at 12 seconds in Polzeath should result in […]

Why is it important to follow safety precautions before invasion? Answer: Half of all of those injuries can be prevented with proper use of safety gear and changes to the playing environment. Following sports rules can help prevent injuries, too. Lack of education and awareness about safety precautions and potential injury. What should we follow […]

How is displacement equal to area? (2). displacement=velocity × time =area of rectangle =Velocity-axis × time-axis, putting the value of velocity and time, then getting out the displacement. Why area under velocity-time graph is displacement? The area under a velocity-time graph is the displacement. Velocity can be negative if an object is moving backwards. The […]