Category: Physics

Are sunspots cooler or hotter? Sunspots are darker, cooler areas on the surface of the sun in a region called the photosphere. The photosphere has a temperature of 5,800 degrees Kelvin. Sunspots have temperatures of about 3,800 degrees K. They look dark only in comparison with the brighter and hotter regions of the photosphere around […]

What are the units of specific latent heat? specific latent heat is measured in joules per kilogram (J/kg) What is specific latent heat of vaporisation? Latent heat of vaporization is a physical property of a substance. It is defined as the heat required to change one mole of liquid at its boiling point under standard […]

How much baking soda and vinegar do I put in my dishwasher? Add 2 cups of vinegar to a clean dishwasher-safe bowl or measuring cup and place it in the top rack. (Note: there’s conflicting advice about whether to put the vinegar on the top or bottom rack. How much baking soda do I put […]

What is the relationship between dependent and independent variables? The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect. Its value depends on changes in the independent variable. What is the difference between dependent and independent variables in research? The independent variable is […]

Does collision frequency increase with temperature? With an increase in temperature, there is an increase in the number of collisions. Increasing the concentration of a reactant increases the frequency of collisions between reactants and will, therefore, increase the reaction rate. Does reaction order depend on temperature? Effect of Temperature on Reaction Rates. The orders of […]

What are the two most important designs for telescopes based on mirrors? If you were looking to buy a telescope for yourself, you would learn that there are two basic designs: refracting telescopes, also known as refractors. reflecting telescopes, also known as reflectors. Who was the first person to use a reflecting telescope? Isaac Newton […]

Can a 100 mL water dissolve a 1 tablespoon of sugar? This maximum amount of solute in water is called the solubility and has the unit of grams per 100 milliliters (grams for every 100 ml of water). The solubility of sugar would be about 180 (a maximum of 180 grams of sugar can dissolve […]

How much does it cost to replace a synchro? Re: how much does it cost to fix synchros? As Frank said, it will get more expensive the longer you wait. I would expect about $1500-2000 from a shop for just a syncro. How much does it cost to fix 2nd gear synchro? $4000 is about […]

What type of data is used in a bar graph? Bar graphs are one of the many techniques used to present data in a visual form so that the reader may readily recognize patterns or trends. Bar graphs usually present categorical and numeric variables grouped in class intervals. They consist of an axis and a […]

What is the acceleration of a falling object that has reached terminal velocity? Near the surface of the Earth, any object falling freely will have an acceleration of about 9.8 metres per second squared (m/s 2). At terminal velocity, the object moves at a steady speed in a constant direction because the resultant force acting […]