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dmitriy555 [2]
3 years ago
9

A scientist is trying to predict the regions of the world most likely to see a decrease in natural resources from population cha

nges. Based on the evidence in the graph, what should the scientist conclude? A. Developed countries will see a decrease in natural resources, because their population will decrease. B. Both developed and developing countries will see a sharp increase in natural resources. C. The amount of natural resources will stay constant in the developing countries. D. Developing countries will see a decrease in natural resources because of their sharp population increase.
Physics
2 answers:
aleksley [76]3 years ago
8 0

<u><em>Developed countries will see a decrease in natural resources, because their population will decrease.</em></u>

Vesna [10]3 years ago
6 0

As a result of decrease in population, the natural resources in developed countries will decrease is the conclusion drawn by scientist.

Answer: Option A

<u>Explanation: </u>

Due to modernization, the developed countries will see destruction of natural resources.

As the country develops, the natural resources will be degraded for construction many industries and other modernized environment. This result in decrease of natural sources and hence the population. In developed countries, as all people move towards they destroy the natural resources.  

Hence, the population change definitely affects the natural resources and decreases it.  Thus the scientist can conclude that the Developed countries will see a decrease in natural resources, because their population will decrease.

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A 110 kg ice hockey player skates at 3.0 m/s toward a railing at the edge of the ice and then stops himself by grasping the rail
disa [49]

Answer

given,

mass of ice hockey player = 110 Kg

initial speed of the skate = 3 m/s

final speed of the skate = 0 m/s

distance of the center of mass, m = 30 cm = 0.3 m

a) Change in kinetic energy

    \Delta KE = \dfrac{1}{2}mv_f^2 - \dfrac{1}{2}mv_i^2

    \Delta KE = \dfrac{1}{2}m(0)^2 - \dfrac{1}{2}\times 110 \times 3^2

    \Delta KE = - 495\ J

b) Average force must he exerted on the railing

     using work energy theorem

      W = Δ KE

      F .d  = -495

      F x 0.3  = -495

      F = -1650 N

the average force exerted on the railing is equal to 1650 N.

7 0
2 years ago
Read 2 more answers
As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor:_______.
Akimi4 [234]

Answer:

b. approaches infinity

Explanation:

Because Capacitive reactance is given as Xc = 1/ωC

​

So we can see that the value of capacitive reactance and therefore its overall impedance (in Ohms) decreases to zero as the frequency increases acting like a short circuit.

Same as the frequency approaches zero or DC, the capacitors reactance increases to infinity, acting like an open circuit which is why capacitors block DC

5 0
3 years ago
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Answer:

total current = 12.417 A

so it will not fuse as current is less than 15 A

Explanation:

given data

toaster = 1140-W

blender = 270-W

lamp = 80-W

voltage = 120 V

solution

we know that current is express as

current = power ÷ voltage   ......................1

here voltage is same in all three device

so

current by toaster is

I = \frac{1140}{120}

I = 9.5 A

and

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I = \frac{270}{120}

I = 2.25 A

and

current by lamp is

I = \frac{80}{120}

I = 0.667 A

so here device in parallel so

total current is = 9.5 A + 2.25 A + 0.667 A

total current = 12.417 A

so it will not fuse as current is less than 15 A

8 0
2 years ago
A car is traveling north with a velocity of 18.1 m/s. Find the velocity of the car after 7.50 seconds if the acceleration is 2.4
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Hello!

Vx = V0x + Ax*t
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Then, the final velocity of the car is 36.1 m/s.
3 0
3 years ago
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