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4 years ago

Convection is a process of heat transfer. In the earth, convection occurs because of heat and pressure from the core.

Physics

2 answers:

Dahasolnce [82]4 years ago

6 0

Answer:

I BELIEVE THE ANSWER A I REMEMBER THAT QUESTION WHEN I DID IT SO THATS THE BEST ONE OUT OF THE 3

Explanation:

vladimir2022 [97]4 years ago

3 0

Answer:

Explanation:

convection is like when the bubble forming at the bottom of a pot of water rise and the cool water falls to the bottom and then heat up and rise to the top and so on which is why the pot heats mostly evenly.

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The power needed to operate your body is about 100 watts. Suppose a human body (of typical mass) could run on fusion power and c

dem82 [27]

Answer:

$5.04\times10^{16}$ J of energy is available through fusion .

Explanation:

let us consider weight of the human body on an average be 70 kg .

since 0.8% of mass is used to convert into energy = $70\times \frac{0.8}{100} =0.56kg$

since according to einstein mass energy equation

$E=MC^{2}$

$E=0.56\times 9\times10^{16}\\ =5.04\times10^{16}J$

8 0

4 years ago

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

patriot [66]

Heat energy required to change the temperature is given by

$Q = ms\Delta T$

here we know that

$m = 225 g = 0.225 kg$

$s = 4186 J/kg C$

$T_i = 5 ^0C$

$T_f = 35 ^0C$

now from above formula we will have

$Q = (0.225 kg)(4186 J/kg C) (35 - 5)$

$Q = 28255.5 J$

So it will remove 28255.5 J heat from the water

3 0

3 years ago

The weight of a body above sea level varies inversely with the square of the distance from the center of Earth. If a woman weigh

Serjik [45]

Answer:

89.16pounds

Explanation:

The equation that defines this problem is as follows

W=k/X^2

where

W=Weight

K= proportionality constant

X=distance from the center of Earth

first we must find the constant of proportionality, with the first part of the problem

k=WX^2=131x3960^2=2054289600pounds x miles^2

then we use the equation to calculate the woman's weight with the new distance

W=2054289600/(4800)^2=89.16pounds

4 0

3 years ago

Ancient Greek philosophers were the first to discuss atoms and matter. This became known in time as____________. Atomic theory s

Vedmedyk [2.9K]

Answer:

atoms,

Explanation:

sorry don't know the second answer

6 0

3 years ago

Xander's friend Corey has a skateboard that he rides at Newton's Skate Park.

DanielleElmas [232]

Answer:

0.5 m/s2

Explanation:

Step 1:

Data obtained from the question.

Total Mass = 60Kg

Net force = 30N

Acceleration =?

Step 2

Determination of the acceleration.

Force = Mass x Acceleration.

With the above equation, we can easily obtain the acceleration as follow:

30 = 60 x Acceleration

Divide both side by 60

Acceleration = 30/60

Acceleration = 0.5 m/s2

Now, we can thus say that the acceleration at that moment is 0.5 m/s2

8 0

4 years ago