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enot [183]
3 years ago
15

It is safe to handle food that requires no additional preparation before service with:

Physics
1 answer:
jeyben [28]3 years ago
4 0

Clean utensils, deli papers, tongs, or disposable

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What happens to the temperature and thermal energy of water when it is heated in a pot on the stove?
Gekata [30.6K]

Answer:

Both its temperature and its thermal energy will increase.

Explanation:

Objects are made up of particles. For example, water is made up of water molecules. The kinetic energy of a particle of mass m and velocity v is equal to \displaystyle \frac{1}{2}\, m \cdot v^2,  

  • The thermal energy of an object measures the total kinetic energy of all its particles.
  • On the other hand, the temperature of that object measures the average kinetic energy of all these particles.

Water in that pot gains energy when the pot is heated. That would increase the total kinetic energy of these water molecules.

What about temperature? Assume that the number of water particles in the pot stays the same- In other words, assume that water in the pot does not evaporate. As the total kinetic energy of these water molecules increase, their average kinetic energy would also increase. As a result, it would appear that the temperature of water in that pot has increased.

7 0
4 years ago
Esta Bien Hecho?<br> desde alli gracias
SVETLANKA909090 [29]

Answer:yeah

Explanation:its good

4 0
3 years ago
Read 2 more answers
A TV is rated at 0.1 kW. This TV is used 3 hours per day. How much energy does the TV use per month (in kWh)?
exis [7]

Answer:

<em><u>A.9</u></em><em><u> </u></em><em><u>kWh</u></em>

Explanation:

Tv is rated 0.1 kW

in one day energy used will be 0.1kW ×3hr=0.3kwh

in 30 days energy used will be 0.3kwh×30=9kwh

6 0
4 years ago
The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire
Leto [7]

Answer:

R' = R/2

Therefore, the new resistance of the wire is twice the value of the initial resistance.

Explanation:

Consider a wire with:

Resistance = R

Length = L

Area = A = πr²

where, r = radius

ρ = resistivity

Then:

R = ρL/A

R = ρL/πr²   --------------- equation 1

Now, the new wire has:

Resistance = R'

Resistivity = ρ

Length = L' = 2 L

Radius = r' = 2r

Area = πr'² = π(2r)² = 4πr²

Therefore,

R' = ρL'/πr'²

R' = ρ(2 L)/4πr²

R' = (1/2)(ρL/πr²)

using equation 1:

<u>R' = R/2</u>

<u>Therefore, the new resistance of the wire is twice the value of the initial resistance.</u>

4 0
3 years ago
If the velocity of sound is 330m/s ,what is the wavelength of the wave of 100Hz ​
Vanyuwa [196]

Answer:

3.3 lambda

Explanation:

Velocity = frequency * wave length

Wave length = velocity / frequency

Wave length = 330/100

Wave length = 3.3 lambda

8 0
3 years ago
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