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Irina-Kira [14]
3 years ago
13

The distance from Earth to the North Star is about 430 light-years. Which of the following statements describes why scientists u

se the light-year unit to measure distance in space?
A.) A light-year is very small and distance in space are very small

B.) A light-year unit is very small and the distance in space are very large

C.) A light-year unit is very large and distance in space are very small

D.) A light-year unit is very large and distance in space are very large
Physics
1 answer:
vampirchik [111]3 years ago
7 0

Answer:

D

Explanation:

D

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Wood has a lower density than water, and thus the upward buoyant force provided by the water is equal to the weight of the wood submerged.

Penny has a smaller density

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The acceleration of the body is 2 m/s^2 while the deceleration is - 1.2 m/s^2.

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Let us recall that the acceleration is the change in the speed of a body with time. We have been told that the body accelerates for 3s and then decelerates to 2s. This implies that the total time that the object spent in motion is 5 s.

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What is the resistance of the coil A at 600 kelvin if its resistance at 300 kelvin is 50 ohms? (Assume the temperature coefficie
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R = R ref ( 1 + ∝ ( T - Tref)  

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