How long does it take to evaporate water from a 10cm diameter spherical cup? by irelandscape

View this thread on steempeak.com
· @irelandscape ·
$0.97
How long does it take to evaporate water from a 10cm diameter spherical cup?
[![water-evaporation.png](https://i.postimg.cc/jSgPThkR/water-evaporation.png)](https://postimg.cc/v4ncL5sK)

OK, this one is for math (calculus) enthusiasts out there! :-)

Imagine a semi-spherical receptacle with a diameter of **10 cms** filled to the rim with water.

The water evaporates at a rate that is directly related to the surface area exposed to the air, along with other environmental parameters such as the temperature of the water, temperature of the air and air speed.

Assuming that the conditions are such that the water evaporates at a constant rate of 30 liters per square meter per hour (**30 l/m<sup>2</sup>h**),

**How long will it take for all the water to have evaporated from the recipient?**

Good luck! :-)

**StemQ Notice:** *This post was originally submitted on [StemQ.io](http://www.stemq.io), a Q&A application for STEM subjects powered by the Steem blockchain.*
👍  , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and 211 others
properties (23)
post_id73,577,873
authorirelandscape
permlinkhow-long-does-it-take-to-evaporate-water-from-a-10cm-diameter-spherical-cup1556009227540
categorystemq
json_metadata"{"tags":["stemq","recreational mathematics","steemstem","physics","calculus"],"app":"StemQ\/0.2.0"}"
created2019-04-23 08:47:06
last_update2019-04-23 08:47:06
depth0
children4
net_rshares2,478,444,162,553
last_payout2019-04-30 08:47:06
cashout_time1969-12-31 23:59:59
total_payout_value0.710 SBD
curator_payout_value0.261 SBD
pending_payout_value0.000 SBD
promoted0.000 SBD
body_length895
author_reputation15,369,745,159,352
root_title"How long does it take to evaporate water from a 10cm diameter spherical cup?"
beneficiaries
0.
accountsteemstem
weight1,000
1.
accountstemq
weight1,500
max_accepted_payout1,000,000.000 SBD
percent_steem_dollars10,000
author_curate_reward""
vote details (275)
@steemstem ·
re-irelandscape-how-long-does-it-take-to-evaporate-water-from-a-10cm-diameter-spherical-cup1556009227540-20190423t103020926z
<div class='text-justify'> <div class='pull-left'> <center> <img width='200' src='https://res.cloudinary.com/drrz8xekm/image/upload/v1553698283/weenlqbrqvvczjy6dayw.jpg'> </center>  <br/> </div> 

This post has been voted on by the **SteemSTEM** curation team and voting trail. <br /> 

If you appreciate the work we are doing, then consider supporting our witness [**stem.witness**](https://steemconnect.com/sign/account_witness_vote?approve=1&witness=stem.witness)! <br /> 

For additional information please join us on the [**SteemSTEM discord**]( https://discord.gg/BPARaqn) and to get to know the rest of the community!<br />

Thanks for having added <b><a href='https://www.steemstem.io/#!/@steemstem'>@steemstem</a></b> as a beneficiary to your post. This granted you a stronger support from SteemSTEM.<br />

Please consider using the <b><a href='https://www.steemstem.io'>steemstem.io</a></b> app to get a stronger support.</div>
properties (22)
post_id73,582,340
authorsteemstem
permlinkre-irelandscape-how-long-does-it-take-to-evaporate-water-from-a-10cm-diameter-spherical-cup1556009227540-20190423t103020926z
categorystemq
json_metadata{"app":"bloguable-bot"}
created2019-04-23 10:30:24
last_update2019-04-23 10:30:24
depth1
children0
net_rshares0
last_payout2019-04-30 10:30:24
cashout_time1969-12-31 23:59:59
total_payout_value0.000 SBD
curator_payout_value0.000 SBD
pending_payout_value0.000 SBD
promoted0.000 SBD
body_length938
author_reputation229,673,617,633,863
root_title"How long does it take to evaporate water from a 10cm diameter spherical cup?"
beneficiaries[]
max_accepted_payout1,000,000.000 SBD
percent_steem_dollars10,000
@steem-plus ·
SteemPlus upvote
Hi, @irelandscape!

You just got a **1.16%** upvote from SteemPlus!
To get higher upvotes, earn more SteemPlus Points (SPP). On your Steemit wallet, check your SPP balance and click on "How to earn SPP?" to find out all the ways to earn.
If you're not using SteemPlus yet, please check our last posts in [here](https://steemit.com/@steem-plus) to see the many ways in which SteemPlus can improve your Steem experience on Steemit and Busy.
properties (22)
post_id73,589,734
authorsteem-plus
permlinkhow-long-does-it-take-to-evaporate-water-from-a-10cm-diameter-spherical-cup1556009227540---vote-steemplus
categorystemq
json_metadata{}
created2019-04-23 13:07:30
last_update2019-04-23 13:07:30
depth1
children0
net_rshares0
last_payout2019-04-30 13:07:30
cashout_time1969-12-31 23:59:59
total_payout_value0.000 SBD
curator_payout_value0.000 SBD
pending_payout_value0.000 SBD
promoted0.000 SBD
body_length439
author_reputation247,995,867,762,997
root_title"How long does it take to evaporate water from a 10cm diameter spherical cup?"
beneficiaries[]
max_accepted_payout1,000,000.000 SBD
percent_steem_dollars10,000
@tking77798 ·
raxefpscf
This seems suspiciously like a homework question to me.  I'm just glad I graduated physical chemistry a long time ago :P
👍  ,
properties (23)
post_id73,608,416
authortking77798
permlinkraxefpscf
categorystemq
json_metadata{"tags":"steemstem","app":"steemstem"}
created2019-04-23 19:44:12
last_update2019-04-23 19:44:12
depth1
children1
net_rshares30,217,744,819
last_payout2019-04-30 19:44:12
cashout_time1969-12-31 23:59:59
total_payout_value0.000 SBD
curator_payout_value0.000 SBD
pending_payout_value0.000 SBD
promoted0.000 SBD
body_length121
author_reputation14,491,425,587,942
root_title"How long does it take to evaporate water from a 10cm diameter spherical cup?"
beneficiaries[]
max_accepted_payout1,000,000.000 SBD
percent_steem_dollars10,000
author_curate_reward""
vote details (2)
@irelandscape ·
I wish I wasn't 25 years too old for homework. 😀
Never realised how fun homework can be!
👍  
properties (23)
post_id73,629,339
authorirelandscape
permlinkpisk89v8y9
categorystemq
json_metadata{}
created2019-04-24 05:54:09
last_update2019-04-24 05:54:09
depth2
children0
net_rshares6,523,087,932
last_payout2019-05-01 05:54:09
cashout_time1969-12-31 23:59:59
total_payout_value0.000 SBD
curator_payout_value0.000 SBD
pending_payout_value0.000 SBD
promoted0.000 SBD
body_length88
author_reputation15,369,745,159,352
root_title"How long does it take to evaporate water from a 10cm diameter spherical cup?"
beneficiaries[]
max_accepted_payout1,000,000.000 SBD
percent_steem_dollars10,000
author_curate_reward""
vote details (1)