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aleksley [76]
3 years ago
5

Diwn unscramble the word

Physics
1 answer:
lbvjy [14]3 years ago
7 0
<h2>ANSWER</h2>

OUM I THINK IS WIND

CORRECT ME IF IM WRONG

<h2>#CARRYONLEARNING</h2>
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Why does water break apart rock when it freezes?
MA_775_DIABLO [31]

Answer:

Explanation:

Water expands when frozen and physically forces the rock apart. When water falls into rock cracks and freezes, As water expands on freezing it puts pressure on the walls of the rock deepening the crack and breaking it.

6 0
3 years ago
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Mercury is a metallic liquid element. It has a density of 11.3 g/cm3 . If you placed the metals listed above in mercury, which o
Ksivusya [100]

Answer:

The answer is below

Explanation:

The question is not complete since the liquid density is not given.

Archimedes principle states that a body at rest in a fluid is acted upon by an upward force known as the buoyant force. The buoyant force is equal to the weight of the fluid displaced.

An object floats when it is placed in a liquid only if the density of the object is less than the density of the liquid. Therefore those metals with density less than that of mercury would float while those with density greater than mercury would sink.

5 0
3 years ago
Which explains how fossils for used as evidence about the theory of continental drift
AleksandrR [38]
When the continental drift occured, it moved all the land on earth around, therefore changing climates. If fossils of animals are found on a certain continent that doesn't support that species, it proves the drift happened because the climate used to be suitable for them, but now is not.
4 0
3 years ago
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Which statement(s) accurately describe the conditions immediately before and after the firecracker explodes:
lidiya [134]

Answer:

Option C, The total momentum of the fragments is equal to the original momentum of the firecracker.

Explanation:

Kinetic energy of cracker cannot remain constant before and after explosion. It is so because in the process of burning and bursting some amount of kinetic energy is lost in the form of light and heat energy. While the total mass before and after the explosion remains constant due to which the momentum is conserved before and after the explosion

Hence, option C is correct

8 0
3 years ago
A 100 kg marble slab falls off a skyscraper and falls 200 m to the ground without hitting anyone. Its fall stops within millisec
Radda [10]

Answer:

Δ T = 2.28°C

Explanation:

given,

mass of marble = 100 Kg

height of fall = 200 m

acceleration due to gravity = 9.8 m/s²

C_marble = 860 J/(kg °C)

using conservation of energy

Potential energy = heat energy

  m g h = m C_{marble}\Delta T

  g h =C_{marble}\Delta T

  \Delta T= \dfrac{g h}{C_{marble}}

  \Delta T= \dfrac{9.8 \times 200}{860}

        Δ T = 2.28°C

7 0
4 years ago
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