Category: Physics

What happens to bimetallic strip when heated? When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. If the strip is cooled, it curves with the steel on the outside. Bimetallic strips are used as switches in thermostats. Why is a bimetallic […]

Does force equal mass times velocity? The first equation states that a Force is equal to Mass times Acceleration, or Newton’s second law of motion. The second one states that Momentum (P) is equal to Mass times Velocity. You can see that the difference lies between velocity and acceleration: acceleration is the rate of change […]

Is vaporization and evaporation the same thing? Vaporization is defined as the transitional phase of a compound or an element and it occurs during the boiling or sublimation process. Evaporation is nothing but a type of vaporization which mostly occurs at temperatures below the boiling point. What is vaporization short answer? Vaporization, conversion of a […]

Why do scientists believe the Abert and Kaibab squirrels are examples of speciation? Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation. -The Kaibab Squirrel gives us one nice example of evolution occurring due to geographic isolation. One population of squirrels had become two separate populations that could no longer interbreed, […]

What affects the strength of van der Waals forces? Number of Electrons Held by the Atoms/Molecules The greater the number of (instantaneous) dipoles formed, the greater the strength of the Van der Waals force. What are the three types of van der Waals forces? van der Waals forces may be classified into three types: electrostatic, […]

Will 2 iron bars attract? The iron bar and magnet attract each other. Like poles face each other. The magnet repels the iron bar. How do you know if iron bars are magnetized? Solution: You can hang the iron rods on a string and watch which one turns to the north (or hang just one […]

What are the 4 tasks of the auditory system? What are the four tasks of the auditory system? – Pick up stimulus energy from the world around us. – Change that energy into a pattern of neural impulses. – Carry those impulses to the proper locations in the brain. What are the 3 aspects of […]

Are located in the center of the periodic table? The transition metals make up the middle block of the periodic table. Like the other elements that are grouped together (alkali metals, noble gases), these metals have very similar properties. Professor Stahl and his research group work with many of the transition metals. Below is a […]

How often is the weather wrong? The Short Answer: A seven-day forecast can accurately predict the weather about 80 percent of the time and a five-day forecast can accurately predict the weather approximately 90 percent of the time. However, a 10-day—or longer—forecast is only right about half the time. Why are weather predictions so inaccurate? […]

Does oily skin ever go away? Will Oily Skin Go Away on Its Own? Since two of the main hormonal causes of oily skin are puberty and adolescence, some people see their oily skin fade with time, especially after puberty. Unfortunately, that’s not the case for everyone. How can I cure my oily skin permanently? […]