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murzikaleks [220]
3 years ago
6

A rock has a mass of 8.0 kilograms falls 5 meters.

Physics
1 answer:
Liono4ka [1.6K]3 years ago
3 0

Answer:

A. 392J

B. 392J

C. 9.899m/s

Explanation:

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Irina18 [472]

If something is traveling at 20 m/s constant speed AND its direction isn't changing, then its velocity is constant.  Another way to say that is: Its acceleration is zero.  Zero acceleration means zero NET force acting on the object, or a group of BALANCED forces acting on it, also called EQUILIBRIUM.  The required answer is: YES.

If a real projectile is launched, the force of gravity acts on it vertically downward.  There's no upward force acting on it to balance gravity.  Therefore, the forces on the projectile are NOT balanced, there IS a net vertical force on it, and it's NOT in equilibrium.  Too bad.


3 0
2 years ago
Which of these galaxies would you most likely find at the center of a large cluster of galaxies?
Arada [10]

Answer:

b. a large elliptical galaxy

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The stars orbit in a messy way which made to believe that they form from the merger of galaxies.

They are also really massive (around 10^{4} solar masses).

The most massive and luminous can be found in the center of cluster of galaxies.  

4 0
3 years ago
Find the magnitude of the force at point x = 15cm if k=10500 N/m when the work done by this force is WD= 1/2k x2
Ann [662]

Answer:

sqdqk3

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6 0
3 years ago
Suggest values of the following in degree Celsius
ollegr [7]

Answer:

freezing water is 0°C

boiling water is 100°C

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3 0
2 years ago
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Explanation:

O + 6V = 9V, so O = 3V

P = 9V as it is parallel to the 9V power supply.

7 0
2 years ago
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