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KATRIN_1 [288]
3 years ago
7

Briefly explain what water is.in your explanation include what a water molecule is,what elements makes up water and draw a molec

ule structure of the water molecule

Physics
2 answers:
djyliett [7]3 years ago
8 0
Water is a naturally abundant polar solvent that is essential for life as we know it. It consists of two hydrogen atoms covelently bonded to oxygen making a H-O bond angle of 120 degrees.

Lemur [1.5K]3 years ago
6 0

Answer:

Explanation: Water is a colorless, odorless and tasteless chemical substance which is made up of two molecules of oxygen and one molecule of hydrogen.Two third part of our planet is made up of water that is why earth is called a blue planet. Water is a polar solvent which is important for life. Water molecules are bounded with hydrogen bonds with each other. In polar form they exist as one hydrogen(positive ion) and one OH(negative) ion.

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what would you want the after life to be like. examples are heaven and hell ,reincarnation ,eternal darkness , reliving your liv
NeTakaya

Answer:

i would want to be a dog or a cat

Explanation:

there just funny

4 0
2 years ago
When a condenser discharges electricity, the instantaneous rate of change of the voltage is proportional to the voltage in the c
e-lub [12.9K]

Answer:

460.52 s

Explanation:

Since the instantaneous rate of change of the voltage is proportional to the voltage in the condenser, we have that

dV/dt ∝ V

dV/dt = kV

separating the variables, we have

dV/V = kdt

integrating both sides, we have

∫dV/V = ∫kdt

㏑(V/V₀) = kt

V/V₀ = e^{kt}

Since the instantaneous rate of change of the voltage is -0.01 of the voltage dV/dt = -0.01V

Since dV/dt = kV

-0.01V = kV

k = -0.01

So, V/V₀ = e^{-0.01t}

V = V₀e^{-0.01t}

Given that the voltage decreases by 90 %, we have that the remaining voltage (100 % - 90%)V₀ = 10%V₀ = 0.1V₀

So, V = 0.1V₀

Thus

V = V₀e^{-0.01t}

0.1V₀ = V₀e^{-0.01t}

0.1V₀/V₀ = e^{-0.01t}

0.1 = e^{-0.01t}

to find the time, t it takes the voltage to decrease by 90%, we taking natural logarithm of both sides, we have

㏑(0.01) = -0.01t

So, t = ㏑(0.01)/-0.01

t = -4.6052/-0.01

t = 460.52 s

3 0
3 years ago
A cart with a mass of 120 kg and a velocity
klasskru [66]

Answer:

dumpster mass

Explanation:

you will need the mass of the dumpster to calculate using conservation of momentum

6 0
2 years ago
Which memory disorder is a common illness on television and films
Alenkinab [10]
amnesia is the most common illness used in tv an films
5 0
3 years ago
Read 2 more answers
A string under a tension of 50.4 N is used to whirl a rock in a horizontal circle of radius 2.51 m at a speed of 21.1 m/s. The s
Leokris [45]

Answer:

619.8 N

Explanation:

The tension in the string provides the centripetal force that keeps the rock in circular motion, so we can write:

T=m\frac{v^2}{r}

where

T is the tension

m is the mass of the rock

v is the speed

r is the radius of the circular path

At the beginning,

T = 50.4 N

v = 21.1 m/s

r = 2.51 m

So we can use the equation to find the mass of the rock:

m=\frac{Tr}{v^2}=\frac{(50.4)(2.51)}{21.1^2}=0.284 kg

Later, the radius of the string is decreased to

r' = 1.22 m

While the speed is increased to

v' = 51.6 m/s

Substituting these new data into the equation, we find the tension at which the string breaks:

T'=m\frac{v'^2}{r'}=(0.284)\frac{(51.6)^2}{1.22}=619.8 N

5 0
3 years ago
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