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KiRa [710]
3 years ago
11

A satellite is orbiting Earth in an approximately circular path. It completes one revolution each day (86,400 seconds). Its orbi

tal distance is 22,500 kilometers from the Earth's center. What is the satellite's average speed?
Physics
1 answer:
Ray Of Light [21]3 years ago
5 0

Well, speed is always relative to some reference, and you haven't
specified the reference.  Also, you haven't specified the "tilt" of the
satellite's orbit relative to the Earth's equator.

So I'm going to pick the ones I like for both items:

-- For the satellite's average speed, I choose the reference
to be the center of the little satellite-TV dish on the corner of
my neighbor's garage roof.

-- For the satellite's orbital inclination, I choose zero.  That is,
the satellite's orbit is directly over Earth's equator. 

If you'll allow me those two assumptions, then your bird is
a communications satellite, located at the magic latitude
and distance from Earth where its orbital revolution matches
the Earth's rotation.  Viewed from anywhere on Earth, the
satellite's average speed is zero, and it appears to hang
motionless in the sky.

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According to the ph scale, which substance has the highest hydrogen ion concentration
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Answer:

C) stomach acid

Explanation:

D is wrong due to water have very little to hydrogen ion concentration. tomato juice has acids but it doesn't remove things like stomach acid. oven cleaner does remove some items, but not in a fast fashion like stomach acid. Stomach acid is extremely acidic and will melt about anything that comes in contact. burn is known for doing serious damage if it gets past the stomach lining.

7 0
3 years ago
An object moving with a speed of 35 m/a and has a kinetic energy of 1500j, what is the mass of the object
EleoNora [17]

Explanation:

Speed or velocity (V) = 35 m/s

Kinetic energy (K. E) = 1500 Joule

mass (m) = ?

We know

K.E = 1/2 * m * v²

1500 = 1/2 * m * 35²

1500 * 2 = 1225m

m = 3000 / 1225

m = 2.45 kg

The mass of the object is 2.45 kg

Hope it will help :)

5 0
3 years ago
Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, the hip’s speed at impact
Westkost [7]

Answer:

-5.8868501529 m/s² or -5.8868501529g

0.118909090909 s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{1.3^2-2^2}{2\times 0.02}\\\Rightarrow a=-5.8868501529\ m/s^2

Dividing by g

\dfrac{a}{g}=\dfrac{-57.75}{9.81}\\\Rightarrow a=-5.8868501529g

The acceleration is -5.8868501529 m/s² or -5.8868501529g

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{1.3-2}{-5.8868501529}\\\Rightarrow t=0.118909090909\ s

The time taken is 0.118909090909 s

7 0
3 years ago
How long will it take for a rock to fall 12 meters?
Amiraneli [1.4K]

Answer:

approximately 5.8 seconds

Explanation:

if you where to time how fast a rock would fall 12 meters it would approximately be 5.8 seconds

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3 years ago
Determine the value of the information in scientific notation. The moon is approximately 3. 63 × 108 meters from Earth. What is
Usimov [2.4K]

Answer:

d

Explanation:

7 0
2 years ago
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