At what angle should you jump to perform the longest possible long jump? The optimum take-off angle for a world-class long jumper may be anywhere from 15° to 27°. Linthorne, N.P. Optimum angles of projection in the throws and jumps. What are the standard views used in a 3rd angle projection? Third angle projection is […]
What happen when air heats up?
What happen when air heats up? What happens when air is heated or cooled? So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward. This is the concept used […]
Should you always remember when handling microscope slides?
What are three differences between work and power?
What are three differences between work and power? The SI unit of work is Joule. Power is defined as the amount of energy transferred in unit time….Difference between Momentum and Inertia. Work Power Work can also be measured in units like electron volt (eV), kWh, MWh, and GWh. Energy is also measured in units like […]
What is an example of hyperextension?
What is an example of hyperextension? Hyperextension and instability of the shoulder can occur when the shoulder joint is over-rotated due to repetitive motions. These motions are common in certain sports, such as swimming, baseball, and javelin throwing. What are the 2 types of body movements? Flexion and Extension. Flexion and extension are movements that […]
Can coaches challenge Penalties 2020?
Can coaches challenge Penalties 2020? Coaches can now challenge the penalties in the first 28 minutes of each half, with the final two minutes subject to booth review, according to Rule 15, Section 3, Article 10 of the NFL Football Operations rule book. Coaches will still only be given two challenge flags per game. Does […]
What three forms can Acid Precipitation take?
What three forms can Acid Precipitation take? What three forms can acid precipitation take? Rain, sleet, or snow. What is the formula of acid rain? “Clean” or unpolluted rain has an acidic pH, but usually no lower than 5.7, because carbon dioxide and water in the air react together to form carbonic acid, a weak […]
Why do sound waves move faster through the ground than through the air?
Why do sound waves move faster through the ground than through the air? Particles of matter are packed more tightly in the ground than in the air. The reason is that sound waves are vibrations of the molecules of the medium: therefore, if the particles of the medium are closer together (as in solids), the […]
What is the mass number for chlorine-37?
What is the mass number for chlorine-37? 36.96590258 Is chlorine-37 stable? There are only two stable isotopes: 35Cl and 37Cl with respective proportions of 75.76% and 24.24% (Berglund and Wieser 2011). The longest-lived radioactive isotope is 36Cl (half-life of 301,000 years); all other isotopes having half-lives of less than 1 h. How many neutrons does […]