Answer:
Doppler Effect
Explanation:
Doppler Effect is a term in Physics that describes the phenomenon experienced when there is change in wave frequency during the relative motion between a wave source and its observer.
In other words, it is referred to as increase or decrease in the level of sound, or other waves as the distance between source and observer is closer or farther from each other, such that it causes change in pitch, which is noticeable by the observer.
For example, when a sound object moves towards an individual or observer, the frequency of the sound waves increases, leading to a higher pitch, and at the same time, when the sound object moves away from an individual or observer, the frequency of the sound waves decreases, leading to a lower pitch. E.g passing siren from ambulance.
Hence, in this case, the right answer is DOPPLER EFFECT
Households dissave when en their consumption exceeds their incomes. The extra money comes from two sources: credit and past incomes, also known as savings. When a house dissaves it can either borrow money from financial institutions or spend money that was previously saved. Everyone cannot dissave at the same time because banks would not have enough money to fund everybody's excessive consumption.
Answer:
The testing effects
Explanation:
Testing effects are finding a long term memory which improved by when some of the time is given to retrieving to be remembered information. It is also called retrieval practice, practice testing, or test enhanced learning. The testing effect is different from general information, practice test. This process is useful for people who want to test their memory. Through the testing effect, a person can improve their knowledge.
For example, a student can use flashcards or any practice st to judge his/ her knowledge.
Answer:
<em>Because immigration is a natural process and a policy of open immigration avoid many of the problems, costs and negatives effects of illegal immigration.</em>
Explanation:
In a country with open immigration people will not use of fraud to get inside the country or to get work, that way the state doesn’t need to spend so much money in securing borders or investigating frauds and illegal workers.
With open immigration the immigrants are able to participate in the economy and pay taxes as other citizens, these increase the states income and the opportunity for investors, if they are illegal they can’t open a legal business, as happened in past with the Chinese’s for many years in US. Or they won’t need social welfare because they can have an income, that way they don’t have to be under the state’s support or be in custody in prisons.
They can also respond to law and have some responsibilities as other citizens without having all the native’s rights, this creates a more equal situation than when they are illegally immigrating.
