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galben [10]
3 years ago
10

_________ refers to the process whereby at low pressures a solid changes directly into the vapor phase without passing through t

he liquid phase.
Physics
1 answer:
Ira Lisetskai [31]3 years ago
6 0
Sublimation <span>refers to the process whereby at low pressures a solid changes directly into the vapor phase without passing through the liquid phase~

</span>
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When gravitational forces and air resistance equalize on an object that is falling toward earth and the object stops acceleratin
abruzzese [7]
<span>when the gravitational forces and air resistance equalize on an object that is falling toward the earth and the object stops accelerating its called TERMINAL  VELOCITY</span>
4 0
3 years ago
A rock from Mars experiences a 263% increase in its weight once it arrives on Earth. What accounts for this increase in weight?
leva [86]
The mass of Mars is smaller than that the mass of Earth, therefore the acceleration of gravity on Mars is much less than that the acceleration of gravity of the Earth.

 The weight of an object is directly proportional to the magnitude of the gravitational acceleration of the planet where it is.

 In this case, the gravitational acceleration in Mars is 3.711 m/s² and that of the planet Earth is 9.807 m/s².

 The acceleration of gravity on Earth is 2.63 times greater than that the acceleration of gravity on Mars. This explains that the same object weighs 263% more on earth
3 0
3 years ago
Imagine you had a bar of gold and decided to cut in half. You repeated this process until eventually you could no longer cut the
nydimaria [60]

This would prove that gold is an <em>element</em>.  No matter how far down you
examine it, you never find any particles of anything except gold.

An example of a different case is salt. 
-- Imagine you had a block of salt and decided to cut it in half.
-- If you repeated this process, then eventually, at some point, you'd have
a tiny particle of salt in front of you, just like before.  BUT ...
-- Just as you were getting ready to cut this one in half, you'd notice that this
particle of salt is different.  It's one atom of sodium stuck to one atom of chlorine,
and if you cut it in half, you would not have ANY salt.   <span />

This would prove that salt is a <em><u>compound</u></em>, made of atoms of two or more elements.

3 0
4 years ago
Read 2 more answers
A wire 40cm long and of diameter 0.60mm has a resistance of 1.5 ohm what is the resistivity of the material of which it is made
zavuch27 [327]

Answer:

The resistivity of the wire is 1.05\times 10^{-6}\ \Omega-m

Explanation:

We have,

Length of a wire is 40 cm or 0.4 m

Diameter of a wire is 0.60 mm

Radius is 0.3 mm or 0.0003 m

Resistance of a wire is 1.5 ohm

Now we need to find the resistivity of the material of which it is made. The resistance of a wire in terms of its resistance, length and area is given by :

R=\rho \dfrac{l}{A}

\rho = resistivity

\rho=R \dfrac{\pi r^2}{l}\\\\\rho=1.5\times  \dfrac{3.14\times (0.0003 )^2}{0.4}\\\\\rho=1.05\times 10^{-6}\ \Omega-m

So, the resistivity of the wire is 1.05\times 10^{-6}\ \Omega-m.

3 0
3 years ago
1. Choose two forces and compare and contrast these forces. You must provide two ways that they are alike and two ways that they
Helen [10]

Answer:

what are the forces ?  :l

Explanation:

7 0
3 years ago
Read 2 more answers
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