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GaryK [48]
3 years ago
10

Mateo’s parents are thinking about investing money to help develop a new fusion power plant. Which issue is most important to co

nsider before making the investment?
A)Fusion has never been controlled, so how have they succeeded in doing it? B)The fuel is quite limited, so have they discovered a more common fuel? C)Fusion has been generating electricity for decades, so why build another fusion power plant?
D) Fusion requires high temperatures and pressures, so how have they reduced the energy cost for it?
Physics
2 answers:
AnnZ [28]3 years ago
7 0

Answer:

The correct answer is option D. Fusion requires high temperatures and pressures, so how have they reduced the energy cost for it?

Explanation:

Right answer on edge nuity

Tasya [4]3 years ago
3 0

Answer:

D) Fusion requires high temperatures and pressures, so how have they reduced the energy cost for it?

Explanation:

Fusion requires high temperatures and pressure for initiation of reaction . There is no chain reaction in it so there is no problem of controlling the problem . On the other hand , the reaction tends to stop as soon as temperature goes down due to heat getting dissipated . There is no problem of fuel as its fuel is deuterium which is present in nature in large amount . The question which is pertinent is that the cost involved in attaining so high temperature is very high so is it cost effective to produce energy by incurring so much of cost . Producing energy by using so much of energy in the beginning appears to be preposterous.

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An attacker at the base of a castle wall 3.60 m high throws a rock straight up with speed 8.00 m/s from a height of 1.70 m above
ryzh [129]

Answer:

we can say here that | v² - u² | is the same for upward as for downward and change in the speed is different here so | v - u | same whenever rock travel up, down for same time and not same distances

Explanation:

given data

base = 3.60 m

speed u = 8 m/s

height = 1.70 m

to find out

check change in speed

solution

we know here formula for v  that is

v² = u² - 2gh      ............1        for upward speed

v² = u² + 2gh     ............2        for projected speed

so here put all value and find v with h = 3.60 - 1.70 = 1.9 m

v² = 8² - 2(9.8) 1.9  = 26.76

v² = 8² + 2(9.8) 1.9   = 101.24

v = 5.173  m/s    ..............3

v = 10.061 m/s   ...................4

so change in speed form 3 and 4 equation

change in speed = v - u = 8 - 5.173  = 2.827 m/s     .................5

change in speed = v - u = 10.061 - 8 = 2.061 m/s     ..................6

so now we can say here that | v² - u² | is the same for upward as for downward and change in the speed is different here so | v - u | same whenever rock travel up, down for same time and not same distances

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Ostrovityanka [42]

Answer:

periods

Explanation:

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