Ask question

Ask question

All categories

2 years ago

10

What is the surface tension of water? of rubbing alcohol? was your prediction correct or incorrect?

1 answer:

kompoz [17]2 years ago

6 0

Rubbing water (isopropyl alcohol) has lesser surface tension than that water.

Water possesses a surface tension of 72 dynes/cm.

Whereas rubbing alcohol has a surface tension of 23 dynes/cm.

<h3>what is surface tension?</h3>

Surface tension is the propensity of liquid surfaces at rest to shrink to the smallest possible surface area.

Because the atoms on the outside of the molecules (often hydrogens) lack strong hydrogen bonding capabilities, most organic liquids have very low surface tensions. Because isopropanol contains just 28%, OH and the remainder is CH or CH3, the linkages that hold a droplet together are few and far between.

The only substance with a higher surface tension than water is liquid mercury (450 dyne/cm).

Learn more about surface tension here:

brainly.com/question/19390213

#SPJ4

You might be interested in

What is the weight of a basketball with a mass of 0.5 kg

IgorLugansk [536]

W = 4.9N. The weight of a basketball with a mass of 0.5Kg is 4.9N.

The weight of an object is the force of gravity on the object and can be defined as the product of the mass by the acceleration of gravity, w = mg.

W = (0.5Kg)(9.8 m/s²) = 4.9N

6 0

3 years ago

True or False. To say that Christ is the sacrifice for sin means to follow His example and die for our sin.

seropon [69]

Answer:

I believe true im very sorry if I'm wrong.

8 0

3 years ago

Q2. When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3 m before stopping. How far will the truck

gtnhenbr [62]

Answer:

12m

Explanation:

If the brake force F is constant the brakes have to do work: W = Fx, where x is the skid distance.

The work is necessary to remove the kinetic energy from the truck. It follows:

$E = \frac{1}{2} mv^{2} = Fx$

m: mass of the truck

v: velocity of the truck

The ratio between the first and the second example would be:

$\frac{\frac{1}{2}mv_1^{2}}{\frac{1}{2}mv_2^{2}} = \frac{Fx_1}{Fx_2}$

This expression simplifies to:

$\frac{v_1^{2} }{v_2^{2} } =\frac{x_1}{x_2}$

Inserting the speeds will give the ratio for x₁/x₂:

$\frac{x_1}{x_2} = \frac{40^{2} }{80^{2} } = \frac{1}{4}$

The distance x₂ is 4 times longer then the distance x₁.

8 0

3 years ago

Assume that the cart is free to roll without friction and that the coefficient of static friction between the block and the cart

Dahasolnce [82]

Answer: $F=\frac{(M+m)g}{\mu _s}$

Explanation:

Given

Trolley of mass M is free to roll without friction

coefficient of friction between trolley and mass m is $\mu _s$

Force F is applied on mass m

Acceleration of the system is

$a=\frac{F}{M+m}$

friction Force will balance weight of block

friction force $=\mu _sN$

$N=ma$

$\mu _sN=mg$

$\mu _sma=mg$

$\mu _s=\frac{g}{a}$

$F=\frac{(M+m)g}{\mu _s}$

6 0

3 years ago

Read 2 more answers

This is a machine that will convert mechanical nuclear or chemical energy into electrical energy

ludmilkaskok [199]

Answer:

generator

Explanation:

a machine that will convert mechanical, nuclear, or chemical energy into electrical energy.

7 0

3 years ago