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3 years ago

What is waters characteristics shape due to?

Physics

2 answers:

bulgar [2K]3 years ago

4 0

Answer: polar covalent bonding

Explanation:

A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.

Ionic bond is formed when there is complete transfer of electron from one atom to another atom.

Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms.

Water molecules are bonded by strong hydrogen bonding between the hydrogen atom and the electronegative oxygen atom by sharing of electrons and thus form polar covalent bonds.

Burka [1]3 years ago

3 0

Answer:

In a polar covalent bond, the electrons are unequally shared by the atoms and spend more time close to one atom than the other.

Explanation:

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Suppose you are myopic (nearsighted). You can clearly focus on objects that are as far away as 52.5 cm away. You can clearly foc

Lilit [14]

Answer:

Explanation:

Image of distant object will be made at far point or at 52.5 so

object distance u = infinity

image distance v = - 52.5 cm

focal length required = f

Lens formula

1 / v - 1 / u = 1 / f

1 / - 52.5 - 0 = 1 / f

f = -52.5 cm

= -.525 m

Power P = 1 / f = - 1 / .525

= - 1.90

now , for eye with glass we shall find new near point .

v = ?

u = - 17.2 cm

f = - 52.5 cm

1 / v - 1 / u = 1 / f

1 / v + 1 / 17.2 = - 1 / 52.5

1 / v = - 1 / 17.2 - 1 / 52.5

= - .05813 - .019

= - .07713

u = - 12.96 cm

so new near point will be 12.96 cm

5 0

3 years ago

Two thin rectangular sheets (0.16 m x 0.44 m) are identical. In the first sheet the axis of rotation lies along the 0.16-m side,

malfutka [58]

Answer:

$t'=1.124s$

Explanation:

$I_b*a_b=I_a*a_a$

$a_a=\frac{w_f}{t'}$

$a_b=\frac{w_f}{t}$

$I_b*\frac{w_f}{t}=I_a*\frac{w_f}{t'}$

$I_b*\frac{1}{t}=I_a*\frac{1}{t'}$

$I=\frac{1}{3}*M*r^2$

$I_a=\frac{1}{3}*M*r_a^2$

$I_b=\frac{1}{3}*M*r_b^2$

$\frac{1}{3}*M*r_b^2*\frac{1}{t}=\frac{1}{3}*M*r_a^2*\frac{1}{t'}$

$t'=(\frac{r_a}{r_b})^2 *t$

$t'=(\frac{0.16m}{0.44m})^2*t$

$t'=\frac{16}{121}*8.5s$

$t'=1.124s$

7 0

3 years ago

Un bloque de 750 kg es empujado hacia arriba por una pista inclinada 15º respecto de la horizontal. El coeficiente de rozamiento

kotegsom [21]

Answer:

4776.98 N is the minimum force to start the rise.

Explanation:

We can use the first Newton's law to find the minimum force to move the block.

So we will have:

$F-W_{x}-F_{f}=0$

Where:

F is the force
W(x) is the weight of the block in the x direction, W = mg*sin(15)
F(f) is the static friction force (F(f) = μN), μ is the static friction coefficient 0.4.

$F=W_{x}+F_{f}=mgsin(15)+\mu N$

$F=mgsin(15)+\mu mgcos(15)$

$F=mg(sin(15)+\mu cos(15))$

$F=750*9.81(sin(15)+0.4*cos(15))$

$F=4776.98 N$

Therefore 4776.98 N is the minimum force to move the block.

I hope it helps you!

8 0

3 years ago

How do the accelerations of the rifle and bullet compare?

Rufina [12.5K]

Answer:

The acceleration of the rifle equals the force that the bullet exerts on the rifle divided by the mass of the rifle. The two forces are equal, but since the mass of the rifle is much greater than the mass of the bullet, the acceleration of the rifle is much less than the bullet's acceleration.

6 0

2 years ago

What is the speed of a truck that travels 15 KM in 12 minutes

Marina CMI [18]

First you need to find out how many kilometers it travels for 60 minutes:
15km*60minutes = 900 Kilometers
Then you divide the distance traveled in one hour by 12 :
900kilometers/12minutes = 75km/h or 47mph

8 0

3 years ago

Read 2 more answers