How much water can be held in a tank? Storage tanks are labeled according to their “shell” size. But their actual water storage capacity is usually about 30% of that. So a 20 gallon tank really holds about 6 gallons of water. The rest of that space, about 70%, holds air. How much water can […]
How much heat does a refrigerator generate?
How much heat does a refrigerator generate? Cooling food requires a considerable amount of energy, which means that a refrigerator adds significantly to your monthly electric bill. According to electricity expert Michael Bluejay, the average refrigerator uses 488 BTUs per hour in normal use. What is the warmest part of a refrigerator? The front of […]
Why atoms tend to lose and gain electrons?
Why atoms tend to lose and gain electrons? Most atoms do not have eight electrons in their valence electron shell. Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are […]
Why is gravity weaker underwater?
Why is gravity weaker underwater? This is because water exerts a kind of frictional force called “force of buoyancy”. When you throw something into water , the water below the object will push it upwards making the object weigh less. Why is there no gravity under water? There is gravity everywhere. Gravity is just the […]
Are humans made of carbon-12?
Are humans made of carbon-12? The most important structural element, and the reason we are known as carbon-based life forms. About 12 per cent of your body’s atoms are carbon. How much of the human body is carbon 12? Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium….Elemental composition […]
Is heat a scalar or vector quantity?
Is heat a scalar or vector quantity? Heat is an aggregate measure of the amount of energy stored in a system of particles (a single particle doesn’t have a temperature), but it doesn’t point in any particular direction, so it’s a scalar. What is a zero vector give an example? When the magnitude of a […]
What are 3 types of symbiosis?
What are 3 types of symbiosis? Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism. What would be the best definition of an ecological relationship? The […]
What is the sound of a ship called?
What is the sound of a ship called? The sound of ship’s siren on the steam ship “Sołdek”. The recording was realized on board of the ship-museum belonging to the National Maritime Museum in Gdańsk (Poland). The sound of ship’s siren was used as so called fog signal, i.e. sound signal emitted by the ship […]
What is the ratio of 5 to 7?
How old was the oldest rock layer?
How old was the oldest rock layer? The oldest zircon dates are 4.36 billion years. Before this study, the oldest dated rocks were from a body of rock known as the Acasta Gneiss in the Northwest Territories, which are 4.03 billion years old. Which Paleozoic rock layer is the oldest? layer C Is fault H […]