What was the first type of clock? The first mechanical clocks, employing the verge escapement mechanism with a foliot or balance wheel timekeeper, were invented in Europe at around the start of the 14th century, and became the standard timekeeping device until the pendulum clock was invented in 1656. What is the benefit of homework? […]
Who is credited with creating the first periodic table?
Who is credited with creating the first periodic table? British chemist John Newlands was the first to arrange the elements into a periodic table with increasing order of atomic masses. He found that every eight elements had similar properties and called this the law of octaves. How did Moseley establish more accurate periodic table? by […]
How many electrons does a 60 watt light bulb pass per second?
Which is the basic unit of matter?
Which is the basic unit of matter? In turn, the atom is the fundamental unit of matter…, that is, of an element. The number of positively charged protons and neutral neutrons in an atomic nucleus account for most of the mass of an atom. Each negatively charged electron that orbits a nucleus is about 1/2000th […]
What type of reaction forms disulfide bonds?
What type of reaction forms disulfide bonds? Disulfide bonds in proteins are formed between the thiol groups of cysteine residues by the process of oxidative folding. The other sulfur-containing amino acid, methionine, cannot form disulfide bonds. How are disulfide bonds broken? Disulfide bonds can be broken by addition of reducing agents. The most common agents […]
How do I put the Y axis on the right side in Excel?
Which line is parallel to Y 2×2?
What is the principle of Maldi-Tof?
What is the principle of Maldi-Tof? MALDI is the abbreviation for “Matrix Assisted Laser Desorption/Ionization.” The sample for MALDI is uniformly mixed in a large quantity of matrix. The matrix absorbs the ultraviolet light (nitrogen laser light, wavelength 337 nm) and converts it to heat energy. What is the role of Reflectron in Maldi-Tof? A […]
How do you find cosine 300 degrees?
How do you find cosine 300 degrees? Since cos(60∘)=12 , we know that cos(300∘)=12 as well since cos(θ)>0 in the fourth quadrant. Which of the following is equal to COS 300? Important Angle Summary θ° θradians cos(θ) 225° 5π/4 -√2/2 240° 4π/3 -1/2 270° 3π/2 0 300° 5π/3 1/2 Which of the following is equivalent […]
What is driving reaction distance?
What is driving reaction distance? Reaction distance is the distance the vehicle travels from the point a driver perceives or decides that something is a hazard, until braking. Braking Distance: Braking is what the driver does to slow a vehicle. How do you calculate reaction time and distance? We can use the distance the meter […]