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3 years ago

What is the most commonly used method of food preservation today? refrigeration drying foods smoking raw meats salt curing

Physics

2 answers:

dmitriy555 [2]3 years ago

6 0

Refrigerator was what is commonly used today. We do dry foods and salt cure but that is not done on a daily basis

klasskru [66]3 years ago

3 0

Answer: Refrigeration

Explanation: Food preservation is the technique of preserving food items from spoiling. It is done by preventing the growth of microorganisms and preventing the rancidity of fats.

In ancient times, the methods used for preservation of foods were drying foods which remove water and thus reduces the bacterial growth, smoking raw meats also hampers the bacterial activity and salt curing leads to osmosis and thus the bacteria dies.

The latest method is refrigeration which makes the food colder and the rate of deterioration gets slow. Bacterial action reduces with refrigeration, as bacteria cannot survive at low temperatures.

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An AC voltage is applied to a purely capacitive circuit. Just as the applied voltage is crossing the zero axis going negative, w

Fiesta28 [93]

Answer:

The Ic will be zero.

Explanation:

Capacitors have a working principal as follows:

As the current flows through the circuit, they store the electrical energy according to certain attributes they have such as the area of the plates and the material's capacitence in between the plates.

An AC voltage increases and decreases between certain maximum and minimum points periodically. So while the AC voltage is on the positive side, the capacitor charges up and when the AC voltage crosses to the negative side, the capacitor takes over and it's current starts increasing as the current coming from the AC source decreases.

So in this case, as the AC voltage crosses zero, the capacitor current was decreasing because the AC voltage was on the positive side and it was charging. The capacitor current will be zero as well and it will start to increase when AC voltage is on the negative.

I hope this answer helps.

7 0

2 years ago

What force is required to move 7 M if the work done is 9 J

Murrr4er [49]

Answer:

1.29 N

Explanation:

The equation for force (with work and distance) is:

$Force=\frac{Work}{distance}$

We can plug in the given values into the equation:

$Force=\frac{9J}{7m}$\approx1.29 N$

5 0

1 year ago

Read 2 more answers

What is Density? (3-5 sentences or your own word don't copy the<br> notes)

lara31 [8.8K]

Answer:

the density makes something float or sink below water its the "water weight "

Explanation:

8 0

3 years ago

What is the horse power of an electric motor which can do by 1250 joule of work in 5 seconds

Ksju [112]

1250 J in 5 sec= 250 Joule(s) per second (1250/5 0

250 Joules per second = 250 Watts ( 1J/s = 1 Watt per definition)

250 Watts output = 250/0.65 efficiency = 384 Watts input

1 Horsepower = 732 Watts

Motors 1 Horsepower and under are made in certain step sizes like

3/4 , 1/2 , 1/3, 1/4, 1/16 1/20 of a Horsepower.

3/4 Horsepower is 549 Watts

1/2 Horsepower is 366 Watts

so you need to 3/4 horsepower motor to achieve 1250 J of work in 5 seconds.

5 0

2 years ago

Which of the following is a TRUE statement?

pshichka [43]

Answer:

e. All of these statements are false.

Explanation:

As we know that heat transfer take place from high temperature to low temperature.

It is possible to convert all work into heat but it is not possible to convert all heat in to work some heat will be reject to the surrounding.

The first law of thermodynamics is the energy conservation law.

Second law of thermodynamics states that it is impossible to construct a device which convert all energy into work without rejecting the heat to the surrounding.

By using heat pump ,heat can transfer from cooler body to the hotter body.

Therefore all the answer is False.

5 0

3 years ago