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iren [92.7K]
3 years ago
13

The picture below shows four objects a paper clip, a pair of scissors, a needle and a horseshoe. assume that each object is made

of the same metal.
​
Physics
1 answer:
Nataly_w [17]3 years ago
6 0

Mass

Explanation:

They physical property that is not the same among the four objects is their masses.

Mass is the amount of matter contained in a substance.

  • Specific heat is the amount of energy needed to raise the temperature of 1g of a substance by 1k.
  • Since the materials are made of the same metal, they have the same specific heat.
  • They will also have the same magnetism and electrical conductivity.
  • These properties are intensive property and do not depend on the amount of matter present.
  • Mass is an extensive property that depends on the amount of matter present.

learn more:

Physical property brainly.com/question/5881840

#learnwithBrainly

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A parachutist of mass 100 kg falls from a height of 500 m. Under realistic conditions, she experiences air resistance. Based on
antoniya [11.8K]
Given:
mass: 100 kg
height: 500 m
1 kJ = 1000 J
gravity = 9.8 m/s²

velocity before impact: v = √2gh ; v = √2 * 9.8 m/s² * 500 m ; v = 98.99494 m/s

KE = 1/2 m v²
KE = 1/2 * 100 kg * (98.99494 m/s)²
KE = 490,000 J

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5 0
3 years ago
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posledela

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Explanation:

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Describe how two isotopes of nitrogen differ from two nitrogen ions???PLEASE ANSWER 20 POINTS
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3 0
3 years ago
A bomb is dropped from a bomber traveling at the speed of 120 km / h, destroying a military objective located at a distance of 2
schepotkina [342]

Answer:

18 km

Explanation:

Convert km/h to m/s:

120 km/h × (1000 m/km) × (1 h / 3600 s) = 33.3 m/s

The time it takes the bomb to travel the 2000 meters is:

2000 m / (33.3 m/s) = 60 s

So it takes 60 seconds for the bomb to fall.  The distance it fell is therefore:

Δy = v₀ᵧ t + ½ aᵧ t²

Δy = (0 m/s) (60 s) + ½ (10 m/s²) (60 s)²

Δy = 18,000 m

Δy = 18 km

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3 years ago
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