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pickupchik [31]
3 years ago
15

Which forms of heat transfer require matter(particles) to happen? (Select all that apply)

Physics
1 answer:
Marizza181 [45]3 years ago
7 0

Answer.

Conduction

Convection

explanation.

Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. Both conduction and convection require matter to transfer heat. If there is a temperature difference between two systems heat will always find a way to transfer from the higher to lower system.

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The electric potential, when measured at a point equidistant from two particles that have charges equal in magnitude but of oppo
Reika [66]

Answer:

C) equal to zero

Explanation:

Electric potential is calculated by multiplying constant and charge, then dividing it by distance. The location that we want to measure is equidistant from two particles, mean that the distance from both particles is the same(r2=r1). The charges of the particle have equal strength of magnitude but the opposite sign(q2=-q1). The resultant will be:V = kq/r

ΔV= V1 + V2= kq1/r1 + kq2/r2

ΔV= V1 + V2= kq1/r1 + k(-q1)/(r)1

ΔV= kq1/r1 - kq1/r1

ΔV=0

The electric potential equal to zero

4 0
4 years ago
When we do dimensional analysis, we do something analogous to stoichiometry, but with multiplying instead of adding. Consider th
Ksivusya [100]

Answer:

The  dimension is  D =  L ^{2} T^{-1}

Explanation:

From the question we are told that

     J  =  -D \frac{dn}{dx}

Here  [J] = \frac{1}{L^2 T}

       [n] =\frac{1}{L^3}

        [x] = L

So

    \frac{1}{L^2 T} =  -D \frac{d(\frac{1}{L^3})}{d[L]}

Given that the dimension represent the unites of  n and  x then the differential  will not effect on them

So

\frac{1}{L^2 T} =  -D \frac{(\frac{1}{L^3})}{[L]}

=>   D =  \frac{L^{-2} T^{-1} * L }{L^{-3}}

=>   D =  L ^{2} T^{-1}

   

5 0
3 years ago
A force of 6.0 Newton’s gives a 2.0kg block an acceleration of 3.0m/s to the right. The force of friction acting on the block is
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The force of friction is zero.
Using F = m a = the force needed is 6 N which means no friction can be acting.
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4 years ago
If Johnny won a 300 meter race in 40 seconds, his speed would be ?
irina1246 [14]

Formula: s = d/t

s = speed

d = distance

t = time

Solve using the values we are given.

s = 300/40

s = 7.5m/s

Best of Luck!

4 0
4 years ago
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Explanation:

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