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melamori03 [73]
3 years ago
8

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same:

Physics
1 answer:
algol133 years ago
6 0

The Correct choice is :

  • Density
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" A bowl of soup at 200Á F. is placed in a room of constant temperature of 60Á F. The
Dahasolnce [82]
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Detailed research on comets indicates that they cannot be older than HOW MANY years.
Free_Kalibri [48]
It would be, 1.000. Hope that helps :)
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3 years ago
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Why electrons flow in a wire when connected to a battery?
vesna_86 [32]

Answer:

The metal atoms in the wire can't move, but their outer electrons can. The force pushes those electrons and they move to further parts of the wire, trying to reach the other end. As the electrons move away, new electrons flow into the wire through the battery to take their place.

Explanation:

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3 years ago
If a car's speed triples, how does the momentum and kinetic energy of the
Harrizon [31]

Answer: When the car speed triples, momentum also triples but Kinetic energy increases 9 times or by 9 fold.

Explanation:

The momentum of a car (an object) is

p= mv

where

m is =the mass of the object( in this case car)

v is its= velocity

While the kinetic energy is is given by the formulae

K=1/2mv²

To determine how momentum and kinetic energy of the  car changes when the speed of the object triples, We have that the new velocity,

v¹= 3v

So that  the momentum  change becomes

p¹=mv¹=m (3v)= 3mv

mv=p

therefore p¹= 3p

we can see that the momentum also triples.

And the kinetic energy change  becomes

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= 1/2m9v²= 1/2 x m x 9 x v²=9 x1/2mv²

1/2mv²=K

K¹= Kinetic energy = 9k

but Kinetic energy increases 9 times

7 0
3 years ago
A(n) ________ has charge but negligible mass, whereas a(n) ________ has mass but no charge.
vfiekz [6]
Electron;Neutron is the correct answer.
6 0
3 years ago
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