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Alja [10]
3 years ago
6

When cooking food in a microwave, why is it more important to rely on the internal temperature of the food rather than on a prev

ious cooking time?
Physics
2 answers:
SSSSS [86.1K]3 years ago
7 0
When cooking food in a microwave it is more important to rely on the internal temperature of the food because microwave do not adequately kills pathogens that may be in food.  Microwave normally penetrate food to the depth of 1 to 1.5 only. In thicker foods, microwave doesn't usually reach the center of the food, the un-reached part normally cook by conduction.
goldenfox [79]3 years ago
7 0

Relying on <u>internal temperature is more important</u> when cooking food in a microwave rather than on previous cooking time because the internal temperature of the food is a critical indicator if the food is safe for consumption.

<h2>Further Explanation  </h2>

Microwave

Microwave has a generator inside it that is called magnetron. This magnetron gets electricity from the power outlet and convert this into radio waves. The magnetron then shoots these waves into the food compartment. The molecules of the food absorbs the energy causing them to vibrate and move fast. The higher the kinetic energy the hotter the temperature of the substance. Basically, it is just ENERGY transfer.

Internal temperature vs. cooking time

When cooking raw meat and poultry, food handlers must ensure that the food’s internal temperature has reached the safe minimum temperature and rest time. A food thermometer must be used to check the temperature. When roasting, the oven temperature must not be lower than 325 °F. Cooking to a safe minimum cooking temperature destroys harmful bacteria that cause food borne illness.  

<u>Safe Minimum internal Temperature and Rest Time for Meat  </u>

  • Poultry (All poultry, minced, whole, chopped and stuffing) - 165ºF  
  • Beef, Pork, Veal, and Lamb (chops, roasts, steaks) - 145ºF with a 3 minute rest time  
  • Minced Meat - 160ºF  

<u />

<u>Danger Zone</u> (40 ℉ - 140 ℉) is the range of temperature where it is very ideal for harmful bacteria to grow rapidly.

Learn more:

  1. Convection brainly.com/question/2480283
  2. Danger Zone brainly.com/question/4496421

Keywords: microwave, internal temperature, cooking

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Pa help po science po yan pang grade 7
AveGali [126]

Answer:

table 1:

1. 100/15 = 6.7 m/s

2. 100/12 = 8.3 m/s

3. 100/9 = 11.1 m/s

table 2:

1. 100/8 = 12.5 m/s

2. 100/6 = 16.7 m/s

3. 100/4 = 25 m/s

Explanation:

8 0
2 years ago
An object has 1200 J of gravitational potential energy when it is dropped. Right when the object hits the ground how much kineti
Fittoniya [83]

Answer:

The kinetic energy is 1200 J

Explanation:

The Principle of Conservation of energy states that "energy is neither created nor destroyed, it is transformed".

This means that energy can be transformed from one form to another, but the total amount of energy always remains constant, that is, the total energy is the same before and after each transformation.

The mechanical energy of a body or a physical system is the sum of its kinetic energy and the potential energy. According to the Principle of Conservation of Energy for mechanical energy, the total mechanical energy that a body possesses is constant at every instant of time.

Since mechanical energy is equal to the sum of kinetic energy and gravitational potential energy that a body possesses, the only way to stay constant is that:

  • when the kinetic energy increases the gravitational potential energy decreases,
  • when gravitational potential energy increases, kinetic energy decreases.

Due to the Principle of Conservation of Energy you can say that the gravitational potential energy is converted to kinetic energy.  So Gravitational potential energy at the top = kinetic energy at the bottom

<u><em>The kinetic energy is 1200 J</em></u>

5 0
2 years ago
A student was walking with a mass of 40 kilograms and an acceleration of 1 m/s/s. What is the force exerted on her?
ValentinkaMS [17]

Answer:

B

Explanation:40x1=40       40=b

brainlyest plz

3 0
3 years ago
13.
lisov135 [29]

The net torque on the seesaw is 294 Nm.

<h3>What is torque?</h3>

Torque is the force that tends to rotate the body to which it was applied.

To calculate the net torque, we use the formula below

Formula:

  • τ = mgd-m'gd'........... Equation 1

Where:

  • τ = Net torque
  • m = Jenny's mass
  • m' = Tom's mass
  • d = Jenny's distance from the pivot
  • d' = Tom's distance from the pivot
  • g = acceleration due to gravity

From the question,

Given:

  • m = 40 kg
  • m' = 30 kg
  • d = 1.5 m
  • d' = 1 m
  • g = 9.8 m/s²

Substitute these values into equation 1

  • τ = (40×1.5×9.8)-(30×1×9.8)
  • τ  = 588-294
  • τ  = 294 Nm

Hence, The net torque on the seesaw is 294 Nm.

Learn more about torque here: brainly.com/question/14839816

5 0
2 years ago
A 35-year-old patent clerk needs glasses of 50-cm focal length to read patent applications that he holds 25 cm from his eyes. Fi
Natali5045456 [20]

Answer:

28.57 cm

Explanation:

We are given that

Focal length,f=50 cm

Distance of application from his eyes,s=40 cm

\frac{1}{s}+\frac{1}{s'}=\frac{1}{f}

\frac{1}{40}+\frac{1}{s'}=\frac{1}{50}

\frac{1}{s'}=\frac{1}{50}-\frac{1}{40}=\frac{4-5}{200}

s'=\frac{200}{-1}=-200 cm

s=25 cm

Substitute the values

\frac{1}{25}-\frac{1}{200}=\frac{1}{f'}

\frac{8-1}{200}=\frac{1}{f'}

\frac{1}{f'}=\frac{7}{200}

f'=\frac{200}{7}=28.57 cm

6 0
3 years ago
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