Category: Physics

Do humans need enrichment? Ultimately for humans, enrichment needs to make us feel valued and good about the contribution we are making. As with animals, there is not one form of enrichment that works for all. What is the primary source of enrichment for rats? For rats and mice, I place high-fiber rabbit food in […]

Does the brain sit in fluid? Being surrounded by CSF helps the brain float inside the skull, like a buoy in water. Because the brain is surrounded by fluid, it floats like it weighs only 2% of what it really does. If the brain did not have CSF to float in, it would sit on […]

What are the different levels of a food pyramid called? There are six categories in the Food Pyramid: the bread, cereal, rice, and pasta group (grains), the fruit group, the vegetable group, the meat, poultry, fish, dry beans, eggs, and nuts group (protein), the milk, yogurt, and cheese group (dairy), and the fats, oils, and […]

What are 3 factors that affect precipitation? Three factors that might influence the occurrence of precipitation are moisture supply, frontal position and atmospheric instability. Moisture supply: A rule of thumb is that when the relative humidity reaches or exceeds 70% at 850 mb (around 1,500 meters or 5,000 ft. What four factors affect a region’s […]

Is 30 minutes of cardio a day enough to lose weight? A new study shows 30 minutes of exercise a day works just as well as an hour in helping overweight adults lose weight. Can you burn fat without cardio? That’s right – you can cut without doing traditional cardio. There’s no denying that sprints […]

What is the characteristic of compound? Characteristics of a compound The properties of a compound are different from the properties of its constituents. Formation of a compound is generally accompanied by evolution of energy in the form of heat or light. A compound has a fixed melting point and boiling point. A compound is always […]

How many times will I be writing 2 if I write down numbers from 11 to 99? How many times will I be writing 2 if I wrote down numbers from 11 to 199? Solution: From 11 to 100, count numbers such as 12,32,42,52,62,72,82,92 which are 8 in numbers plus numbers from 20,21,22,23,24,25,26,27,28,29, have digits […]

What are the two main types of energy? Many forms of energy exist, but they all fall into two basic categories: Potential energy. Kinetic energy. What are the two types of mechanical energy? There are two main types of mechanical energy. They are motion energy and stored mechanical energy. Motion energy: This is the energy […]

What would be the path of reflected light if an incident ray passes through focus? An incident ray passing through the focus will be reflected parallel to the principal axis. Why the light ray retraces its path when it passes through Centre of curvature? Answer: The reason for light falling on the centre of curvature […]

What are examples of fast chemical reactions? Chemical reactions that complete in a very short time, such as less than 10 -6 seconds, they are called fast reactions. Examples: Magnesium ribbon is burnt in the flame of Bunsen burner; it quickly gets combusted with a noticeable spark. Similarly, a neutralization reaction between acids and bases […]