How many galaxies have we named? All in all, Hubble reveals an estimated 100 billion galaxies in the universe or so, but this number is likely to increase to about 200 billion as telescope technology in space improves, Livio told Space.com. What are the 4 types of galaxies? In 1936, Hubble debuted a way to […]
Can you have a negative mechanical energy?
Can you have a negative mechanical energy? Yes mechanical energy can be negative. Mechanical energy is the sum of potential as well as kinetic energy. Can energy of a body be negative? The kinetic energy of a body cannot be negative because the mass cannot be negative and the square of the speed gives a […]
What are the 5 examples of sedimentary rocks?
What are the 5 examples of sedimentary rocks? Examples include: breccia, conglomerate, sandstone, siltstone, and shale. Chemical sedimentary rocks form when dissolved materials preciptate from solution. Examples include: chert, some dolomites, flint, iron ore, limestones, and rock salt. What are the 3 main types of sedimentary rocks? There are three different types of sedimentary rocks: […]
What is the difference between a screw and a wedge?
What is the difference between a screw and a wedge? A wedge is much bigger than any normal screw. Wedge has a plain surface but screw has a surface with ridges and grooves. • Wedge is typically used for cutting and slicing purposes but screw is typically used for fixing and attaching purposes. Is screw […]
What are three uses for Convex mirrors?
What are three uses for Convex mirrors? Convex mirrors are used inside the buildings, They are also used in making lenses of sunglasses, They are used in the magnifying glass, They are used in securities and they are used in telescopes. What lens is thicker in the middle than at the edges? A single piece […]
What are six steps of the scientific method?
What are six steps of the scientific method? The scientific method consists of six steps: Define purpose. Construct hypothesis. Test the hypothesis and collect data. Analyze data. Draw conclusion. Communicate results. Which of the following lists the scientific method in the correct order? There are four basic steps involved with the scientific method. The usual […]
Do living organisms defy the second law of thermodynamics?
Do living organisms defy the second law of thermodynamics? We can view the entire universe as an isolated system, leading to the conclusion that the entropy of the universe is tending to a maximum. However, all living things maintain a highly ordered, low entropy structure. Which law of thermodynamics states that absolute zero Cannot be […]
Are earthquake resistant buildings safe?
Are earthquake resistant buildings safe? The highest category of structural safety is that of “Earthquake Resistant — Operational”. Under this, there would be no damage to the property or any injury caused to its occupants irrespective of the magnitude of the earthquake. Which shape of plan is better in earthquake zone? Hexagons are the best, […]
How do you get marshmallows to sink?
How do you get marshmallows to sink? When you squish the marshmallow, you squeeze out the air, making it denser than the water. Now the flat marshmallow will sink. The more you squish the marshmallow, the lower it will sink. If you are having trouble with a large marshmallow, try a mini marshmallow. What liquid […]