List guidelines for selecting images. Describe methods for ensuring your web images are usable and accessible.
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What will be an ideal response?
Webpage images include illustrations, diagrams, and photographs. Be sure you select images that achieve the following:• Are relevant to your content and add value to your website.• Conform with or complement your website's color scheme.• Support your website's message.• Contribute to the overall mood you want to set?Remember to follow best practices for web usability and accessibility, such as adding alternative text to your images and ensuring contrast between background images and text. Only use images to which you own the copyrights, or secure the copyrights and give proper credit to the image owner or creator if using an image from another source. Another important consideration when selecting webpage images is file size. A higher file size means a better-quality image, but also one that may take longer to download and display in the visitor's browser. Experiment with image file sizes as a part of your website testing process to achieve a balance between image quality and download time.
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Under what conditions do real gasses approximate the behavior of an ideal gas?
A. high temperature and low pressure B. low temperature and low pressure C. low temperature and high pressure D. high temperature and high pressure
Velocity Selector: A beam of electrons is accelerated through a potential difference of 1.0 kV before entering a velocity selector. If the magnetic field of the velocity selector has a magnitude of 0.010 T, what magnitude of the electric field is required if the electrons are not to be deflected as they pass through the velocity selector? (e = 1.60 × 10-19 C, melectron = 9.11 × 10-31 kg)
A. 5.9 × 103 V/m B. 1.9 × 105 V/m C. 6.0 × 105 V/m D. 7.2 × 106 V/m E. 1.1 × 105 V/m
Summarize some of the evidence suggesting that Mars once had flowing water
What will be an ideal response?
A transverse periodic wave is represented by the equation y(x, t) = -1.50 cm sin(1,500 rad/s t - 10.0
x). Another transverse wave is represented by the equation y(x, t) = +1.50 cm sin(1,500 rad/s t + 10.0
x). What is the equation that represents the superposition of the two waves?
A. y(x, t) = 3.0 cm sin(1,500 rad/s t - 10.0
x)
B. y(x, t) = 3.0 cm sin(1,500 rad/s t) cos(10.0x)
C. y(x, t) = +3.0 cm cos(1,500 rad/s t) sin(10.0x)
D. y(x, t) = 3.0 cm sin(1,500 rad/s t + 10.0x)