Category: Physics

Which is called the basic of science? Physics is also called “the fundamental science” because the subject of study of all branches of natural science like chemistry, astronomy, geology, and biology are constrained by laws of physics, similar to how chemistry is often called the central science because of its role in linking the physical […]

What can change wave speed? The speed of a wave is only altered by alterations in the properties of the medium through which it travels. The wavelength of a wave does not affect the speed at which the wave travels. Both Wave C and Wave D travel at the same speed. How is wave speed […]

What is the reciprocal of a period? The reciprocal of the period, or the frequency f, in oscillations per second, is given by f = 1/T = ω/2π. What is cycle of a wave? A wave is a repeating pattern. It repeats itself in a periodic and regular fashion over both time and space. And […]

Why nitrogen-fixing bacteria are important? Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle. Why can’t plants fix nitrogen? Earth’s atmosphere contains a huge pool […]

What is the best metal to conduct electricity? Silver Is vegetable oil good or bad conductor? Vegetable oil is a poor conductor of electricity. It does not conduct electricity. Vegetable oil are not necessarily “good” conductors of electricity but yes they will conduct electricity. Most things conduct electricity at some level, they may have high […]

What are some examples of fixed expenses? While these fixed costs may change over time, the change is not related to production levels but rather new contractual agreements or schedules. Examples of fixed costs include rental lease payments, salaries, insurance, property taxes, interest expenses, depreciation, and potentially some utilities. Is food a fixed or variable […]

What is an example of operant conditioning in everyday life? Positive reinforcement describes the best known examples of operant conditioning: receiving a reward for acting in a certain way. Many people train their pets with positive reinforcement. How is operant conditioning used today? Operant conditioning can also be used to decrease a behavior via the […]

What are the strongest and weakest bonds? This means Ionic bonds tend to dissociate in water. Thus, we will think of these bonds in the following order (strongest to weakest): Covalent, Ionic, Hydrogen, and van der Waals. Also note that in Chemistry, the weakest bonds are more commonly referred to as “dispersion forces.” What is […]

What causes copper to form? Most nonrecycled supplies come from porphyry copper deposits (PCDs), which form when hot, metal-bearing fluids percolate up through Earth’s crust. These fluids bubble up through the crust and collect in pores in the rock, where they sit, waiting for the final step that will allow them to form copper minerals. […]

How do children learn observations? Children learn and imitate behaviors by watching and listening to others. This is sometimes called “observational learning,” when children can learn things simply by observing others. Children are learning about the behavioral choices of others and also about the consequences of those behaviors. What are the 3 key concepts of […]