Answer:
They move farther apart
Explanation:
When objects heat up they expand for example heating up a balloon makes it expand
Does it give you options?
The freshwater reservoirs on earth are ranked by volume, with the one with the biggest volume at the top is-
1. ice caps; 2. groundwater; 3. lakes; 4. rivers.
<h3>Explain the freshwater reservoirs on earth?</h3>
The atmosphere, the earth's surface, and the earth's interior are the three main locations where water can be kept.
- Oceans, glacier ice, underground, lakes, soil humidity, living organisms, atmospheric atmosphere, and rivers are examples of these reservoirs, which are used to store water.
- There is an estimated 1.386 billion km3 (330 million cubic miles) of water on Earth, of which 97.5% is salt water and 2.5% is fresh water.
- Only 0.3% of a fresh water is liquid at the surface.
- More than 70% of freshwater is utilized for agriculture in the majority of the world's areas.
- An estimated 50% increase in agricultural output and a 15% increase in water flows are needed by 2050 to feed a globe of 9 billion people.
Thus, the freshwater reservoirs on earth are ranked by volume, with the one with the biggest volume at the top is-
- 1. ice caps
- 2. groundwater
- 3. lakes
- 4. rivers
To know more about the freshwater reservoirs, here
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The correct answer is:
The minimum amount of unstable atoms needed to produce an uncontrolled chain reaction is called critical mass.
The explanation:
when:
-Critical mass is the minimum amount of something required to start or maintain any project or venture. In nuclear physics, critical mass is the smallest mass of material that will start a chain reaction in a nuclear bomb or reactor. Both kinds of critical mass begin chain reactions.
- The atomic mass is the mass of an isotope of an element in atomic mass units.
-The atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. and In an uncharged atom, the atomic number is also equal to the number of electrons.
So, The correct answer here is critical mass
<h2>
Question
</h2>
A particle, mass 0.25 kg is at a position (<em>-7i + 7j + 5k</em>) m, has a velocity (<em>6i - j + 4k</em>) m/s, and is subject to a force (<em>-5i + 0j - k</em>) N. What is the magnitude of the torque on the particle about the origin?
<h2>
Answer:</h2>
47.94Nm
<h2>
Explanation:</h2>
The torque (τ) on a particle subject to a force (represented as force vector F) at a position (represented as position vector r) about the origin is given by the cross product of the position vector r for the point of application of a force and the force F. i.e
τ = r x F
Given:
r = (-7i + 7j + 5k) m
F = (-5i + 0j - k) N
| i j k |
r x F = | -7 7 5 |
| -5 0 -1 |
r x F = i(-7 - 0) - j(7+25) + k(0+35)
r x F = i(-7) - j(32) + k(35)
r x F = -7i - 32j + 35k
Therefore the torque τ = -7i - 32j + 35k
The magnitude of the torque is therefore;
|τ| = 
|τ| = 
|τ| = 
|τ| = 47.94Nm
The magnitude of the torque on the particle about the origin is 47.94Nm
