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alexandr402 [8]
3 years ago
15

Which of the following examples shows the greatest amount of biodiversity

Physics
1 answer:
Anna [14]3 years ago
3 0

Answer:

A lake full of a larger variety of fish, frogs, and birds

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What is the force of gravity (from the Earth) on the 700kg satellite if it’s 10km above the Earth's surface?
BabaBlast [244]

Answer:

g = 4.7 × 10^{-16} m/s^{2}

Explanation:

Given that the mass of the satellite = 700 kg, and 10,000 m above the earth;s surface.

From Newton's second law,

 F = mg ............... 1

From Newton's gravitation law,

F = \frac{GMm}{r^{2} } .................. 2

Where: F is the force, G is the gravitational constant, M is the mass of the first body, m is the mass of the second body, g is the gravitational force and r is the distance between the centers of the two bodies.

Equate 1 and 2 to have,

mg = \frac{GMm}{r^{2} }

⇒   g = \frac{GM}{r^{2} }

But; G =  6.67 × 10^{-11} N m^{2} Kg^{-2}, M = 700 Kg, r = 10000 m

Thus,

g = \frac{6.67*10^{-11*700} }{10000^{2} }

  = \frac{4.669*10^{-8} }{1*10^{8} }

  = 4.669 × 10^{-16} m/s^{2}

The force of gravity on the satellite is 4.7 × 10^{-16} m/s^{2}.

5 0
4 years ago
The cheetah, the fastest of land animals, can run a distance of 274 m in 8.65 s at its top speed. What is the cheetahs top speed
OverLord2011 [107]

Answer:

31.68 meters per second.

Explanation:

Speed is equals to Distance divided by Time, so, this means that speed is inversely proportional to time and directly proportional to distance.

Here, Distance is given which is 274 meters.

          Time taken to cover the given distance is 8.65 seconds.

So, by putting the values of distance and time in the formula of speed we will get the top speed of Cheetah which is 31.68 meters per second.

8 0
3 years ago
On a small planet, an astronaut uses a vertical
sleet_krkn [62]
Constant velocity means the netto force = 0, therefore F(gravity) = F(astronaut).
175N divided by 87,5kg = 2.00kg/N
6 0
3 years ago
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A sports car has an average acceleration of 5.81 m/s2. How long does it take for the car to reach 60.0 mi/h, if it starts from r
Aleks04 [339]

Answer:

  4.617 s

Explanation:

The speed of 60 mi/h can be converted to m/s:

  (60 mi/h) × (1609.344 m/mi) × (1 h)/(3600 s) = 26.8244 m/s

The relationship between speed and acceleration is ...

  v = at

  t = v/a = (26.8244 m/s)/(5.81 m/s²) ≈ 4.617 s

It will take the car 4.617 seconds to reach 60 mi/h starting from rest.

5 0
3 years ago
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How is chemical bonding related to the organization of the periodic table ?? (Can someone help me this is due tomorrow)
Paladinen [302]

when a chemical bonds with another chemical it creates an element that element can be a gas, liquid, solid, or a metal. depending on which chemicals bond you will get different elements

8 0
3 years ago
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