Category: Physics

What is meant by the absolute refractory period? : the period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied. — called also absolute refractory phase. — compare relative refractory period. How long is the absolute refractory period? about 0.4 ms Why is […]

What are the three types of binary systems? — There are three types of binaries: visual, which means you can actually see the two stars in a telescope (no orbiting binaries have a wide enough separation to be seen with the naked eye); spectroscopic, which means you can see the presence of the orbit due […]

Is netball a girl sport? Netball occupies the rather unique position of being one of the few sports that is almost exclusively played by women. Although almost 20,000 men played netball every fortnight in 2019, in both mixed and all-male teams, after primary school netball is pretty much a women’s sport. Which is better netball […]

What is the similarities between speed and velocity? Speed and velocity both represent a way to measure the change in position of an object relative to time. In fact, for a straight line motion, the speed and velocity of an object are the same (since distance and displacement will be the same). Speed and velocity […]

Does alkaline water make you poop? Finally, alkaline water contains magnesium, calcium, and other minerals that act as a mild laxative to help with digestion. When the digestive system is functioning properly, it can better digest food, and increase metabolism. Does alkaline water make you pee more? As alluring as it sounds, the answer is […]

What is n equal to in physics? The newton (symbol: N) is the SI unit of force. 1 Newton is equal to the amount of force required to accelerate an object at a rate of 1 metre per second, every second. One newton is the force needed to accelerate one kilogram of mass at the […]

Why is the focal length of a concave lens negative? The power of the lens is the reciprocal of the focal length. A concave lens is a diverging lens, so it will always have a negative focal length. Therefore, the power of a concave lens is also negative. Was this answer helpful? Is V positive […]

How important is the energy flow of an ecosystem? The energy flow in the ecosystem is important to maintain an ecological balance. The producers synthesise food by the process of photosynthesis. The remaining energy is utilised by the plants in their growth and development. This stored energy is transferred to the primary consumers when they […]

How many Gen Z play video games? Gaming’s appeal spans generations: 87% of Generation Z, 83% of millennials, and 79% of Generation X are playing video games on smartphones, gaming consoles, and computers at least weekly if not daily. Do Millennials like video games? Importantly, Millennials aren’t just interested in playing video games. They also […]

What are 5 examples of energy transfer? Energy transfers A swinging pirate ship ride at a theme park. Kinetic energy is transferred into gravitational potential energy. A boat being accelerated by the force of the engine. The boat pushes through the water as chemical energy is transferred into kinetic energy. Bringing water to the boil […]