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timurjin [86]
3 years ago
8

A _______ is a very massive object in space that does not allow any object or radiation to escape its gravitational hold.

Physics
2 answers:
marysya [2.9K]3 years ago
5 0
Black hole, it sucks in pretty much everything in its path
AfilCa [17]3 years ago
3 0
I am pretty sure your answer is going to be C black hole, I hope this helps!! :)
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Select the correct answer from the drop-down menu. anne applies a force on a toy car and makes it move forward. what can be said
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2 years ago
Wave-particle duality tells us that wave and particle models apply to all objects whatever the size, so why don't we observe wav
Genrish500 [490]

Answer:

Because the wavelengths of macroscopic objects are too short for them to be detectable.

Explanation:

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\lambda=\frac{h}{mv}

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4 0
3 years ago
Two charged spheres are 20 cm apart and exert an attractive force of 8 x 10-9 n on each other. What will the force of attraction
Pavel [41]

Answer:

3.2\cdot 10^{-8} N

Explanation:

The inital electrostatic force between the two spheres is given by:

F=k\frac{q_1 q_2}{r^2}

where

F=8\cdot 10^{-9} N is the initial force

k is the Coulomb's constant

q1 and q2 are the charges on the two spheres

r is the distance between the two spheres

The problem tells us that the two spheres are moved from a distance of r=20 cm to a distance of r'=10 cm. So we have

r'=\frac{r}{2}

Therefore, the new electrostatic force will be

F'=k\frac{q_1 q_2}{(r')^2}=k\frac{q_1 q_2}{(r/2)^2}=4k\frac{q_1 q_2}{r^2}=4F

So the force has increased by a factor 4. By using F=8\cdot 10^{-9} N, we find

F'=4(8\cdot 10^{-9} N)=3.2\cdot 10^{-8} N

6 0
3 years ago
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