Scientists might model the water cycle by using a diagram. What are two benefits of this model?
A. It represents a complex process in a simpler way.
I B. It is less dangerous than studying the water cycle directly.
O C. To show the direction of the cycle, arrows must be used.
D. It represents something that takes a long time to observe directly.
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What is the relationship between the wavelength of a wave and it's energy?

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.