Number two because the sun emits heat in the form of light to earth
Answer: #2 (Heat energy and light energy both can come from the sun.
Explanation:
In Lesson 4.1, you learned that the machine used to fuel missions to Titan is not making enough liquid oxygen. We are waiting for a more detailed report from the Universal Space Agency. Before we receive the report, however—and now that you know how the liquid oxygen machine is supposed to work—what are some ideas you have about what could be causing it to malfunction?
Some ideas which could be causing it to malfunction is an increase in temperature of the titan.
What is Boiling point?This is defined as the constant temperature at which a liquid starts changing into gas.
Liquid oxygen has a high boiling point which means the Titan will have to be hotter for it to vapourize. This may have led to an increase in the production of oxygen gas and reduction in liquid oxygen production.
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Connecting many devices in a single socket does not affect the flow of current in a
circuit. True or False
Answer:- False
Explanation:-
False because it can leads to overloading and further to short circut.
Hope It Will Help You!Help for Critical thinking
3 What kinds of scientists worked on the structure of DNA?
4 in what way did the work of Watson and Crick depend on the work of other scientists?
5 what was the significance of the work of these scientists?
Answer:
3.James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin. These four scientists—Watson, Crick, Franklin, and Wilkins—codiscovered the double-helix structure of DNA, which formed the basis for modern biotechnology.
4.
Watson and Crick contributed the first model of the 3d structure of DNA that was correct in its essential features. The 3d structure of a biological molecule is important because it can explain how it carries out its function. DNA was known to be a very important biological molecule, because it had been established as the primary constituent of the genetic material that is inherited from parent to child. The Watson and Crick model suggested how the genetic material carried out its function.
The most important feature of the model was the suggestion of base-pairing via hydrogen bonds between Adenine and Thymine on one hand, and Cytosine and Guanine on the other hand. This base pairing scheme suggested how DNA may copy itself - an essential requirement of the genetic material.
Critically, their model wasn't just a speculative clever idea. It also accounted for known data. Among this was Erwin Chargaff's base ratios, Rosalind Franklin's X-ray data, and known facts of chemical bonding. This made it plausible.
The Watson and Crick DNA model offered a solution, at least in outline, to one of the deepest mysteries of biology - how does the genetic material achieve inheritance at the molecular level. It also opened up a possible line of attack to another deep mystery - how the genetic material determine the traits of organisms by specifying the synthesis of proteins, also known as the coding problem.
5.
Image result for 5 what was the significance of the work of these scientist who created the dna structure
Rosalind Franklin discovered the density of DNA and, more importantly, established that the molecule existed in a helical conformation. Her work to make clearer X-ray patterns of DNA molecules laid the foundation for James Watson and Francis Crick's suggestion that DNA is a double-helix polymer in 1953.
HELP
In the “Liquid Oxygen” article, you read about how liquid oxygen is made and how it is needed to fuel rockets. The Universal Space Agency is planning to use liquid oxygen to fuel a rocket, carrying a new surface lander, to Titan. The launch window is short and needs to occur on a specific date or else the Universal Space Agency will need to wait for another year. But, there is a problem. The liquid oxygen machine is producing less liquid oxygen than normal. You have been asked to determine what is causing this problem.
In the space below, write down any initial ideas you may have about why the liquid oxygen machine is not working.
The hydrogen-oxygen reaction produces enormous heat, causing water vapour to expand and leave the engine nozzles at speeds of up to 10,000 miles per hour by using liquid nitrogen.
What is liquid oxygen ?The movement of liquid oxygen from one container to another can result in the formation of an oxygen-enriched atmosphere in the area of the containers. When a liquid oxygen container is not used for an extended period of time, a small quantity of oxygen is vented into the surrounding area. When the container is tipped over or put on its side, more oxygen is vented. If the container is stored in a confined area, this venting may result in an oxygen-enriched atmosphere.
What are fuel rockets ?Rockets generate thrust by rapidly expelling material rearward. The thrust generated can be calculated by multiplying the propellants' mass flow rate by their exhaust velocity relative to the rocket. (specific impulse). A rocket is accelerated by the weight of combusting gases against the combustion chamber and nozzle, rather than by "pushing" against the air behind or below it. Because of the lack of air pressure on the outside of the engine, rocket engines work best in space. It is also possible to accommodate a longer nozzle in space without experiencing flow separation.
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A motorcyclist is traveling at a speed of 72 km/h along a straight road. If the motorcyclist can slow down at a rate of 2 m/s2, what is the minimum stopping distance the motorcyclist needs?
