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Natalija [7]
3 years ago
5

As water across the surface of the earth it dissolves material as it travels. What property of water does this demonstrate?

Physics
1 answer:
iris [78.8K]3 years ago
3 0

Answer:

B) Water is a solvent

Explanation:

Among many other chemicals, water can dissolve a variety of substances. The solvent properties of chemicals are far beyond it. That property makes water a universal solvent.

Water has one atom of oxygen and two atoms of hydrogen.

One side of the water molecule is positively charged and the other side is negatively charged. This property attracts other substances like salt and disintegrates into positive and negatively charged ions. This property is due to its physical and chemical nature.

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Why are animal cells square and animal cells round
irina [24]
Plant cells are not necessarily square, but they due tend to have distinct edges and be kind of rectangular. This structure is caused by the cell wall which is very rigid and therefore forces the cell to have a more defined shape. However, animal cells do not have a cell wall but only the plasma membrane. Which is is why it's round.
3 0
3 years ago
A stationary horn emits a sound with a frequency of 228 Hz. A car is moving toward the horn on a straight road with constant spe
stiks02 [169]

Answer: 26.84 m/s

Explanation:

Given

Original frequency of the horn f_o=228\ Hz

Apparent frequency f'=246\ Hz

Speed of sound is V=340\ m/s

Doppler frequency is

\Rightarrow f'=f_o\left(\dfrac{v+v_o}{v-v_s}\right)

Where,

v_o=\text{Velocity of the observer}\\v_s=\text{Velocity of the source}

Insert values

\Rightarrow 246=228\left[\dfrac{340+v_o}{340-0}\right]\\\\\Rightarrow 366.84=340+v_o\\\Rightarrow v_o=26.8\ m/s

Thus, the speed of the car is 26.84\ m/s

4 0
4 years ago
The movement of the Australian plate pushes Australia north at an average speed of about 17 cm per year. What will Australia's d
stealth61 [152]

Answer: 170m

Explanation:

V=d/t

V= velocity

D= displacement

T=time

D=v*t

D=17*1000

D= 17000cm

Convert to metres

D= 17000/100

D= 170m

5 0
3 years ago
Carbon has six protons and six neutrons. Which of the following represents the arrangement of electrons in a carbon
Alexeev081 [22]

Answer:

Carbon has 6 electrons.

Before I answer, here's what you need to know.

There are 7 shells. Each shell can hold a certain amount of electrons.

1: 2

2: 8

3: 18

4: 32

5: 32

6: 18

7: 8

Carbon has 6 electrons, remember? So shell 1 is already completely filled. Shell 1 completely full, so onto shell 2.

Shell 2 needs 8 electrons, but carbon only has 4 to give, so 2, 4.

I hope this helps!

4 0
3 years ago
Read 2 more answers
A ball thrown vertically upward is caught by the thrower after 2.93 s. Find the initial velocity of the ball. The acceleration o
almond37 [142]

Answer:

The initial velocity of the ball is 28.714 m/s

Explanation:

Given;

time of flight of the ball, t = 2.93 s

acceleration due to gravity, g = 9.8 m/s²

initial velocity of the ball, u = ?

The initial velocity of the ball is given by;

v = u + (-g)t

where;

v is the final speed of the ball at the given time, = 0

g is negative because of upward motion

0 = u -gt

u = gt

u = (9.8 x 2.93)

u = 28.714 m/s

Therefore, the initial velocity of the ball is 28.714 m/s

7 0
3 years ago
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