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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 race car completes race in 10 minutes. Its average speed is 200km/hr. How long is the racetrack?
tigry1 [53]

Answer:

33.34km

Explanation:

S=Vxt

0.167hr x 200km/hr

ans=33.34km

8 0
2 years ago
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. The student reports hearing two
katrin [286]

Answer:

a)     L = 33.369 m , b) 21

Explanation:

The analysis of the ocean depth can be performed assuming that at the bottom of the ocean there is a node and the surface must have a belly, so the expression for resonance is

         λ = 4 L / n

         n = 1, 3, 5, ...

The speed of the wave is

         v = λ f

        v = 4L / n f

        L = n v / 4f

Let's write the expression for the two frequencies

       L = n₁ 343/4 53.95

       L = n₁ 1,589

       

       L = n₂ 343/4 59

       L = n₂ 1.4539

Let's solve the two equations

       n₁ 1,589 = n₂ 1,459

       n₁ / n₂ = 1.4539 / 1.589

       n₁ / n2 = 0.91498

Since the two frequencies are very close the whole numbers must be of consecutive resonances, let's test what values ​​give this value

  n₁    n₂    n₁ / n₂

  1      3       0.3

  3     5       0.6

  5     7        0.7

  7     9        0.77

  9    11        0.8

  17   19       0.89

  19  21        0.905

  21  23       0.913

  23 25       0.92

Therefore the relation of the nodes is n₁ = 21  and n₂ = 23

Let's calculate

                L = n₁ 1,589

                L = 21  1,589

                L = 33.369 m

b) the number of node and nodes is equal therefore there are 21 antinode

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3 years ago
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Explanation:

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2 years ago
Can someone help me with the 10th one which is circled
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Juan amd kym have four samples of matter. They are observing and describing the properties of these samples. Which property will
TiliK225 [7]

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Explanation:

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The general property of a substance that is in gaseous state includes:

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--> Tightly packed: A substance can be grouped as solid if the molecular movements of the particles are negligible.

From the samples under observation by Juan and kym, if the sample that possesses the above described qualities, it is a solid rather than liquid or gas.

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