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Talja [164]
3 years ago
12

What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is t

he outcome? What happens after an hour in vinegar?
Physics
1 answer:
elixir [45]3 years ago
3 0
The zinc nail will rust and in vinigar it will evaporate
hi im zac
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John took 0.75 hours to bicycle to his grandmother's house, a distance of 4 km. What is his velocity?
ddd [48]

Answer:

5.3Km/hr

Explanation:

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6 0
2 years ago
How does bilateral symmerty extend to our senses?​
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8 0
3 years ago
What type of plate boundary interactions takes place when tectonic plates move apart?
grigory [225]
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8 0
3 years ago
A microwave oven operates on the principle that application of a high-frequency field causes electrically polarized molecules su
Tema [17]

Answer:

a

The time it would take the beef to reach a temperature of 0⁰C is t= 662 sec = 11.93 min

b)

The time it would take to heat the beef to uniform temperature of 80⁰C is

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c

 Efficient absorption of Microwave power is in regions of liquid water . Hence if the food or the microwave irradiation  is not uniform, the power will be absorbed non-uniformly, resulting in a non-uniform temperature rise. Defrost region will absorb more energy per unit volume than frozen region.if food is of low thermal conductivity, there will be insufficient time for heat conduction to make the temperature more uniform.Use of low power allows more time for conduction to occur.  

Explanation:

The explanation is shown on the first second and third uploaded image

6 0
3 years ago
what is the valure of work done on an objectwhen a 50newton force moves it 15 metrs in thesame dirction as the force
Snowcat [4.5K]
50 *15=750
work is force time distance times angle between both vectors 
here the angle is 0.
5 0
3 years ago
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