Why can't you walk on water?

2 answers:

8 0

Technically speaking, walking over pure water isn't possible. The only way it can be done is by converting it to a high density fluid or one with high viscosity. Also, if you think you can run at 108 km/hr (30 m/s), then you'll have the ability to run across water.

fiasKO [112]3 years ago

8 0

This happens because of surface tension. Water molecules are attracted to each other. They form weak bonds between each other. Where these molecules meet air, the exposed water molecules can't attach to any more molecules in front of them — there's air there.

You might be interested in

How many liters of oxygen are required to react completely with 14.8 mol of Al?

Bond [772]

Answer:

296 L

Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

4Al + 3O₂ ⟶ 2Al₂O₃

n/mol: 17.4

1. Moles of O₂

$n = \text{17.4 mol Al}\times \dfrac{\text{3 mol O}_{2}}{\text{4 mol Al}}= \text{13.05 mol O}_{2}$

2. Volume of O₂

You haven't given the conditions at which the volume is measured, so I assume it is at STP (0 °C and 1 bar).

At STP the molar volume of a gas is 22.71 L.

$V = \text{13.05 mol}\times \dfrac{\text{22.71 L}}{\text{1 mol }}= \textbf{296 L}$

8 0

3 years ago

what is the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 1.4×1015hz?

Anika [276]

<span>The equation you used is KE=hv-hv0, where h=6.63*10^-34 (constant). You multiply h by 1.5*10^15. Multiply h by the threshold freq of cesium (from part A). Subtract the second answer from the first answer, and you get the kinetic energy. Hope this helps.</span>

7 0

3 years ago

When lithium and fluorine combined, what is the compound form

VashaNatasha [74]

Lithium fluoride is the compound name

7 0

3 years ago

Read 2 more answers

Which of the following best defines balanced forces?

Mars2501 [29]

Answer:

Balanced forces are forces that act in opposite directions and cancel each other out