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Alla [95]
3 years ago
9

Fred has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister really

liked the model, he spent two weeks in his dad's workshop building her a Styrofoam copy. When he picked up the models to take them back inside the house, which physical property would he immediately notice upon picking them up? A. color B. conductivity C. density D. ductility
Physics
2 answers:
eimsori [14]3 years ago
3 0
C or "Density" The granite rock has a much higher density than the Styrofoam. 
Pie3 years ago
3 0

Answer: C. density

Explanation:

A. Color is a physical property of the substance which arises due to transition of electrons.

B. Conductivity is the physical property of a substance which is due to the presence of free electrons. The substance which contains free electrons is a good conductor and which lack free electrons is a bad conductor or insulator.

C. Density is defined as the mass contained per unit volume. More is the density, heavier is the substance and vice versa.

D. Ductility is the physical property of a substance to be drawn into wires.

Granite is much denser than styrofoam and thus feels heavier than styrofoam.

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A skater rotates with her arms crossed at an angular speed of 8.0 rad/s and she has a moment of inertia of 100 kg/m2. She extend
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Answer:

When her hands extends, her momen of inertia is 4.28\ kg-m^2.

Explanation:

Given that,

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7 0
3 years ago
Two airplanes leave an airport at the same time. The velocity of the first airplane is 750 m/h at a heading of 51.3°. The veloci
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Refer to the diagram shown below.

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The angle between the two airplanes is
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Let c =  the distance between the two airplanes after 2.4 hours.
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Answer: 2335.4 miles

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convex lens and a concave mirror

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