![mazolethrin6876](/avatars/35464.jpg)
mazolethrin6876
08.09.2020 •
Engineering
A stirrer of shaft power 500W is used to stir 100 kg of water that is being heated. The heater output power is 3.5 kW and heat losses are 800W. The initial temperature of the water is 20°C. Determine: (a) How long it will take before the water reaches a temperature of 80°C, (b) The internal energy change of the water. Neglect the specific heat capacity of the vessel itself and take the specific heat capacity of water to be 4.19 kJ/kgK.
Solved
Show answers
More tips
- S Society and Politics Understanding Politics and Its Role in the Development of Civilization...
- H Health and Medicine Everything You Wanted to Know About Male Circumcision: Its Goals and Effects...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
Answers on questions: Engineering
- H Health Having an STD such as chlamydia, prevents someone from getting a different STD at the same time. O True O False...
- P Physics In three to five sentences, describe how scientists use deductive and inductive reasoning to support the idea that water on Earth may have come from comets. (4 points)...
- M Mathematics Brittney has 2 and 3/4 yards of fabric. She wants to make wreaths that require 1/8 yards. What is the maximum number of wreaths she can make?...
- M Mathematics Marilyn got a birthday check from her grandmother. she spent half of it on a soccer ball, and then earned $20 mowing a neighbors lawn. she now has $38. how much was her birthday...
Ответ:
number 2 is