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4 years ago

Why is the majority of Earth's freshwater not readily available for our use?

2 answers:

8 0

The answer is B. It is locked up in glaciers and ice caps.

Hope this helped. Good luck! Please give me a thanks and Brainliest.

Simora [160]4 years ago

7 0

Answer:

B.It is locked up in glaciers and ice caps.

Explanation:

Earth is the only planet which we know where water is present is present in all the three forms. Seventy percent of the Earth is filled with water but only 2.5% is freshwater. Rest of it is saline water in oceans. Now, out of this 2.5% freshwater, only 1% is in usable form. This is because rest of the freshwater is locked up in ice caps and glaciers and cannot be used.

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Which option correctly describes a model of methanol. URGENT

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The last one.

One grey sphere, Four white spheres, and One red spheres

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3 years ago

After a check up, a person now has a far point of 100 cm, but with good near point vision. He needs to wear a new pair of correc

lakkis [162]

Answer:

so his far point according to this pair of glass is 200 cm

Explanation:

power of old pair of corrective glasses is given as

$P = -0.5 dioptre$

now we have

$f = \frac{1}{P}$

$f = -2 m$

$f = -200 cm$

now we know that for normal vision the maximum distance of vision is for infinite distance

so by lens formula we have

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + 0 = \frac{1}{200}$

$d_i = 200 cm$

so his far point according to this pair of glass is 200 cm

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3 years ago

In which direction does a bag at rest move when a force of 20 newtons is applied from the right?

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Answer:

in the direction of the applied force

Explanation:

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4 years ago

Why are coal,nuclear,oil,and natural gas determined to be non-renewable types of energy resources

IrinaVladis [17]

Answer:

Once used as a energy source they cannot be charged/used again.

Explanation:

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3 years ago

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 5.65 m/s. The stone subs

xxTIMURxx [149]

Answer:

1. 20.54m/s

2. 1.52s

Explanation:

QUESTION 1:

The speed the stone impact the ground is the final speed/velocity, which can be calculated using the formula:

v² = u² + 2as

Where;

v = final velocity (m/s)

u = initial velocity (m/s)

a = acceleration due to gravity (m/s²)

s = distance (m)

From the provided information, u = 5.65m/s, v = ?, s = 19.9m, a = 9.8m/s²

v² = 5.65² + 2 (9.8 × 19.9)

v² = 31.9225 + 2 (195.02)

v² = 31.9225 + 390.04

v² = 421.9625

v = √421.9625

v = 20.5417

v = 20.54m/s

QUESTION 2:

Using v = u + at

Where v = final velocity (m/s) = 20.54m/s

t = time (s)

u = initial velocity (m/s) = 5.65m/s

a = acceleration due to gravity (m/s²)

v = u + at

20.54 = 5.65 + 9.8t

20.54 - 5.65 = 9.8t

14.89 = 9.8t

t = 14.89/9.8

t = 1.519

t = 1.52s

3 0

3 years ago