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Kuelezea maana ya asilimia
Describing the meaning of precent: a Khan Academy video on percentages with the audio translated into Kiswahili
Kuelezea maana ya asilimia
Describing the meaning of precent: a Khan Academy video on percentages with the audio translated into Kiswahili
The beauty of a coral reef, the warm radiance of sunshine, the sting of sunburn, the X-ray revealing a broken bone, even microwave popcorn—all are brought to us by electromagnetic waves. The list of the various types of electromagnetic waves, ranging from radio transmission waves to nuclear gamma-ray (γ-ray) emissions, is interesting in itself.
Even more intriguing is that all of these different phenomena are manifestations of the same thing—electromagnetic waves (see Figure 15.1). What are electromagnetic waves? How are they created, and how do they travel? How can we understand their widely varying properties? What is the relationship between electric and magnetic effects? These and other questions will be explored.
In this chapter, you will learn why it is important to identify a reference frame in order to clearly describe motion. For now, the motion you describe will be one-dimensional. Within this context, you will learn the difference between distance and displacement as well as the difference between speed and velocity. Then you will look at some graphing and problem-solving techniques.
This video explores how to multiply decimals by 10, 100, 1000 etc
Video 1: Understanding decimal multiplication
Video 2: Multiplying decimals using estimation
Video 3: Developing strategies for multiplying decimals
Video 4: Developing strategies for multiplying 2-digit decimals
Online activity 1: Drag and drop the product answer to match the correct expression
Online activity 2: Answer the decimal multiplication questions
This video explores how to multiply and divide decimals.
This online activity provides you with exercises on ordering decimals.
This video explores percentage changes.
Photoelectric materials emit electrons when they absorb light of a high-enough frequency.