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Bumek [7]
3 years ago
11

Can someone help me with these questions plz

Physics
1 answer:
Korolek [52]3 years ago
8 0

Im not 100% on these but i can try

1. A compound is made up of elements and their different atoms

2.

A. salt- compound (NaCl) is two elements Na (sodium) and Cl (chloride?)

B. Nitrogen- element its on the periodic table

C. Helium- element its on the periodic table

D. Water- compound (H2O) two elements hydrogen and oxygen

3. element, compound, compound, element

Hope this helps


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A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling on an adjacent wal
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The distance is 3.1 m

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Bonds: Including Carbon Compounds Quick Check
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A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed i
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3 years ago
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A girl of mass 55 kg throws a ball of mass 0.80 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s
lisabon 2012 [21]

Answer:

Magnitude of the average force exerted on the wall by the ball is 800N

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Given

Contact Time = t = 0.05 seconds

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Initial Velocity = u = 25m/s

Final Velocity = 25m/s

Magnitude of the average force exerted on the wall by the ball is given by;

F = ma

Where m = 0.8kg

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Average Force = 800N

Hence, the magnitude of the average force exerted on the wall by the ball is 800N

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3 years ago
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