What do you mean by mechanical advantage of a lever is 4? Answer: The mechanical advantage of a machine is 4. Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then […]
Where does the water leave a sponge?
Where does the water leave a sponge? osculum What 2 substances give the sponge support? The two substances that give sponges support are spongin and spicules. What is the role of Amoebocytes in a sponge? Amoebocytes have a variety of functions: delivering nutrients from choanocytes to other cells within the sponge; giving rise to eggs […]
Which mirror can form a real image?
Which mirror can form a real image? Solution: Concave mirrors can form real images. Convex and plane mirrors always form virtual images. Is the image in a plane mirror laterally inverted? The image formed by a plane mirror is laterally inverted, upright, of the same size and is formed far behind the mirror as the […]
What are the main function of transistors?
What are the main function of transistors? Transistor is a kind of solid semiconductor device, which has many functions, such as detecting, rectifying, amplifying, switching, voltage stabilizing, signal modulating and so on. As a variable current switch, transistor can control the output current based on the input voltage. What is the main purpose of transistors? […]
How do I know my attitude?
How do I know my attitude? Perhaps the most straightforward way of finding out about someone’s attitudes would be to ask them. However, attitudes are related to self-image and social acceptance. In order to preserve a positive self-image, people’s responses may be affected by social desirability. How do you identify the author’s tone? The definition […]
What is the formula for calculating uncertainty?
Can a supernova destroy other stars?
Can a supernova destroy other stars? When a star expands, its material reaches Lagrangian point where the material beyond this point is transferred to its companion. The consequence of this depends on parameters. It might end as SN Ia if the companion is white dwarf, or black hole if it is neutron star, etc. So, […]
How can firearms and bullets be used as evidence?
How can firearms and bullets be used as evidence? If investigators recover bullets or cartridge cases from a crime scene, forensic examiners can test-fire a suspect’s gun to see if it produces ballistic fingerprints that match the evidence. A fired bullet with rifling impressions from the barrel of a gun (left). What evidence can be […]
How much horsepower is fast?
How much horsepower is fast? So, what is a good amount of horsepower for a car? Right between 200- and 300-horsepower is a solid amount of horsepower on a vehicle. Many base models of a variety of brands/models will offer between 120- and 200-horsepower, which is excellent for drivers who do not mind a more […]
Why is biking uphill so hard?
Why is biking uphill so hard? Cycling at altitude is harder both on the flat and in the hills! At the point of the pedalling phase where you have the lowest leverage on the cranks (6, 12 o’clock), your speed momentarily slows. The rate of deceleration is greater when cycling uphill due to the additional […]