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goldfiish [28.3K]
3 years ago
7

An insulated lunch bag keeps food warm by

Physics
2 answers:
Greeley [361]3 years ago
8 0

Answer: slowing the transfer of thermal energy from the food inside the bag to the air outside the bag.

Hatshy [7]3 years ago
4 0
I believe the answer is D
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A disk with a radius of R is oriented with its normal unit vector at an angle Q with respect to a uniform electric field. Which
beks73 [17]

As we know that electric flux is given by

\phi = E.A

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1. By increasing the area of the disc

2. by changing the orientation of disc so the area of the disc is parallel to the electric field

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<em>  A. increasing the area of the disk</em>

7 0
3 years ago
Please please help me please please
Scorpion4ik [409]

Answer:

<h3>C. </h3>

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3 0
3 years ago
The heat flux for a given wall is in the x-direction and given as q^n = 11 W/m^2, the walls thermal conductivity is 1.7 W/mK and
MrMuchimi

Answer:

\frac{dT}{dx} = 6.47 ^oC/m

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.

For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards

Explanation:

As we know that heat flux is given by the formula

q^n = K\frac{dT}{dx}

here we know that

K = thermal conductivity

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now we know that

q^n = 11 W/m^2

also we know that

K = 1.7 W/mK

now we have

11 = 1.7 \frac{dT}{dx}

so temperature gradient is given as

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also in other unit it will be same

\frac{dT}{dx} = 6.47 ^oC/m

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.

For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards

5 0
3 years ago
What are the dimensions of potential energy?​
Pachacha [2.7K]

Potential Energy (P.E) = Mass x

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5 0
3 years ago
. Explain how surface waves can have characteristics of both longitudinal waves and transverse waves.
Annette [7]

Answer:

This whole concept depends on the depends on the direction of propagation of the surface wave or displacement of wave such that if its in direction of wave velocity its said to features of longitudinal wave and if its in direction at 90° to wave velocity its said to have transverse features

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3 years ago
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