Why is your favorite country is vietnam

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sashaice [31]

Answer:

Climate can have many effects on vegetation. An example of this is vegetation growth and survival. Numerous species of plants need a specific climate in order to survive. If those needs are not met, then the plant will die.

Explanation:

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6 0

4 years ago

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A 215 kg rocket moving radially outward from Earth has a speed of 6.42 km/s when its engine shuts off 307 km above Earth's surfa

Vinvika [58]

<h2>GIVEN DATA</h2>

Mass of Rocket = m = 215 kg

Mass of Earth = M = $5.97*10^{24}$ kg

Radius of Earth = R = $6.37*10^6$ m

Gravitational Constant = G = $6.67*10^-11 \;\;m^3kg^{-1}s^{-2}$

Speed of Rocket = 6.42 km/s

Initial Height of Rocket from Earth's Surface = 307 km = $3.07*10^5$ m

Final Height of Rocket from Earth's Surface = 731 km = $7.31*10^5$ m

Initial Height from Earth's Centre = $R_i$ = $3.07*10^5 + 6.37*10^6 = 6.677*10^6$ m

Final Height from Earth's Surface = $R_f$ = $7.31*10^5 + 6.37*10^6 = 7.101*10^6$ m

(a) Kinetic Energy at Final Height = $K.E_f$

(b) Maximum Height of Rocket above Earth's Surface = $H_{max}$

<h2>EXPLANATION</h2>

Part (a):

As drag air is negligible, energy will be conserved.

$\therefore$ ΔE = 0

$K.E_i + U_i = K.E_f + U_f$

$K.E_f = U_f - K.E_i - U_i$

where, U is the potential energy of the system.

$K.E_f=\;G\frac{mM}{R_f} + \frac{1}{2}mv_i^2\;-\;G\frac{mM}{R_i}\;\;\;\;----------\;(1)$

Substituting Values and simplifying,

$K.E_f = 3.665*10^9 J$

Part (b):

The rocket will come to rest after reaching the maximum height. Therefore, its final velocity and consequently final kinetic energy will be zero.

$i.e.\;\;v_f = 0\;\;\;\&\;\;\; K.E_f=0$

Equation (1) will become,

$0\;=\;\;G\frac{mM}{R_f} + \frac{1}{2}mv_i^2\;-\;G\frac{mM}{R_i}$

$or\;\;\frac{1}{2}v_i^2= GM(\frac{1}{R_i}-\frac{1}{R_f})\\\\\frac{1}{2GM}v_i^2= (\frac{1}{R_i}-\frac{1}{R_f})\\\\\therefore\; R_f = \frac{2GMR_i}{2GM-v_i^2R_i}$

Substituting values and simplifying,

$R_f = 10.20*10^6 m$

which is the distance from the Earth's centre. To find the height of rocket from Earth's surface, we simply subtract the Earth's radius from above result.

$H_{max} = R_f - R$

$H_{max} = 10.20*10^6\;-\;6.37*10^6\\\\H_{max} = 3.83*10^6\;\;m$

4 0

3 years ago

The most common form of legal description for urban residential property is the

erik [133]

The most common form of legal description for urban residential property is the plat lock and block number.

Civic sprawl, also called sprawl or suburban sprawl, the rapid-fire expansion of the geographic extent of metropolises and municipalities, frequently characterized by low- viscosity domestic casing, single- use zoning, and increased reliance on the private machine for transportation. Civic sprawl is caused in part by the need to accommodate a rising civic population; still, in numerous metropolitan areas it results from a desire for increased living space and other domestic amenities. Civic sprawl has been identified with increased energy use, pollution, and business traffic and a decline in community distinctness and cohesiveness. In addition, by adding the physical and environmental “vestiges” of metropolitan areas, the miracle leads to the destruction of wildlife niche and to the fragmentation of remaining natural areas.

Learn more about Civic sprawl brainly.com/question/2377157

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3 0

2 years ago

(15pts) renewable resources in the great plains?

Serggg [28]

Copper
Gold
Lead
Natural Gas
Oil Shale
Petroleum

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7 0

3 years ago

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Which region is too dry to grow enough food for a large population but has

joja [24]