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Why cant I use the same expression for doppler effect when the source is in motion and when the listener is in motion?

This is a common misconception that involves changes in frames of reference. In most contexts moving towards an object refers to the same physical reality as the object moving towards you (at constant spe...

FM
Answered by Francisco M. Physics tutor
1264 Views

How do researchers know which research method to use for their study?

The decision to use one of these over another depends mostly on what exactly the researchers are trying to find or understand, that is the aim of the study. as each has different strengths and limitations...

ME
2298 Views

What is the difference between high energy and low energy coasts?

Depending on the location, coastlines can be categorised as high energy or low energy.-High energy coasts are usually characterised by:-Strong wave action, typically during the winter months-The rate of e...

CC
27679 Views

Nine-thousand five-hundred and forty-two people attend a pop concert. Round this number to the nearest hundred.

Answer: nine-thousand five-hundred (9,500)
There are 9 thousands, 5 hundreds, four tens and 2 units. We need to round the hundreds and the answer we have in 5 hundreds. Because of there being 5 hundr...

AW
Answered by Alexandra W. Maths tutor
3055 Views

expand (2x+4)(x+2)

For this question you can use a method called the foil method. The F stands for first therefore you times the 2 variables that are first in each bracket. 2x times x which gives you 2x^2. The O stands for ...

AF
Answered by Aiyshah F. Maths tutor
5332 Views

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