Why does rain make me feel safe? Studies have found that when rain sounds enters people’s brain, brain unconsciously relaxes and produces alpha waves, which are very close to the state of brain when human sleeps. Rain sound is generally between 0 and 20 kHz. It is not upsetting. On the contrary, this sound makes […]
Does helium go bad?
Does helium go bad? No, helium does not expire. You must close the valve tightly or helium will leak over time. Are Balloon Time tanks recyclable? What weight can helium lift? Helium atoms weigh less than the oxygen and nitrogen atoms in the air. Helium has a lifting force of about one gram per litre. […]
What happens to the size of pupil of our eye in I Dim Light II bright light?
What frequency makes you smarter?
What frequency makes you smarter? The highest frequency brain waves are apparently called gamma waves. These waves can have a frequency of anywhere between 25 and 100 Hz. People whose brains produce more gamma waves are said to have greater ability to concentrate, focus and experience higher levels of cognition. Will reading increase IQ? It […]
How many watts are in a unit?
What is the importance of sound in our life?
What is the importance of sound in our life? The following are the importance of sound in our lives: It helps us to communicate with others. By sound, we can understand the context of the words spoken. Sound can help people to protect themselves from danger such as the sound or horn of the train […]
Can you stop while merging?
Can you stop while merging? Do not stop before merging into freeway traffic, unless it is absolutely necessary. Freeway traffic has the right-of-way. When it is safe, follow the “3-second rule” (refer to the “Do not be a tailgater!” section). Do not try to merge into a gap that is too small. Why is the […]
How many types of investigation are there?
How many types of investigation are there? Scientists use three types of investigations to research and develop explanations for events in the nature: descriptive investigation, comparative investigation, and experimental investigation. What are some investigative techniques? For countless years, criminal investigators have relied on six basic investigative techniques to solve crimes; i.e., (1) the development of […]
How do you calculate exponential population growth?
How do you calculate exponential population growth? From the given data, we can conclude the initial population value, x0, equals 10,000. Also, we have the growth rate of r = 5%. Therefore, the exponential growth formula we should use is: x(t) = 10,000 * (1 + 0.05)t = 10,000 * 1.05t . What is exponential […]
What is the newest food pyramid?
What is the newest food pyramid? The most recent update of the Dietary Guidelines came out in 2020, and it uses an updated MyPlate visual model. The 2020 MyPlate model, shown below, shows a plate containing the five food groups (fruits, vegetables, proteins, grains, and dairy) in a place setting. Which food group should you […]