D. Prototyping. This is because a prototype is basically a replica of the original one and in order to find out what all we need to add in our original, material selection plays a vital role in prototypes.
True, RR Lyrae stars pulsate, but with shorter periods and lower luminosities than Cepheids.
The pulsation periods of the fundamental-mode RR Lyrae stars range from about 0.3 to 1.0 days (Population II pulsators with longer periods are categorized as type II Cepheids), but the vast majority of them have generations longer than 0.45 days.
<h3>Why do RR Lyrae stars pulsate?</h3>
RR Lyrae stars pulse like Cepheid variables, but the nature and histories of these stars is thought to be rather different. Like all variables on the Cepheid fluctuation strip, pulsations are caused by the κ-mechanism, when the ambiguity of ionised helium varies with its temperature.
To learn more about RR Lyrae, refer
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Answer:
Since you probably are looking forward to maintaining and repairing the laptop yourself after the warranty has expired, you will need to gain access to the product's documents and spare parts. For this reason, you should choose manufacturers such as Lenovo and Dell. These allow anybody to access their service manual on their sites for free while also letting available documentation about the way to dismantle their computers and other alternatives to buy spare parts somewhere else than their authorized service centers.
Answer:
Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones.
Explanation:An input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance.
The correct answer for this question is this one: "B. biologists and chemists." A new drug to combat acne has been developed from a compound that is found in a melon. The <span>scientists would contribute to the development of the drug are biologists and chemists.
</span>
Here are the choices:
A. <span>chemists only
B. biologists and chemists
C. biologists, chemists, and physicists
D. biologists, chemists, and physicians</span>
