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Alexus [3.1K]
4 years ago
13

Develop a power point presentation to which you explain how convection works by using ocean water as an example. In your present

ation, give details about where the water is moving during convection and why it is moving. Describe how water temperature is measured, and how you would measure to show thermal energy transfer.
Physics
1 answer:
Ede4ka [16]4 years ago
4 0
I wonder what is going to change when you can be used for the day and the temperature changes to a substance that you have learned to eat and drink a lot more water and water you have a water.
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A +71 nC charge is positioned 1.9 m from a +42 nC charge. What is the magnitude of the electric field at the midpoint of these c
viva [34]

Answer:

The net Electric field at the mid point is 289.19 N/C

Given:

Q = + 71 nC = 71\times 10^{- 9} C

Q' = + 42 nC = 42\times 10^{- 9} C

Separation distance, d = 1.9 m

Solution:

To find the magnitude of electric field at the mid point,

Electric field at the mid-point due to charge Q is given by:

\vec{E} = \frac{Q}{4\pi\epsilon_{o}(\frac{d}{2})^{2}}

\vec{E} = \frac{71\times 10^{- 9}}{4\pi\8.85\times 10^{- 12}(\frac{1.9}{2})^{2}}

\vec{E} = 708.03 N/C

Now,

Electric field at the mid-point due to charge Q' is given by:

\vec{E'} = \frac{Q'}{4\pi\epsilon_{o}(\frac{d}{2})^{2}}

\vec{E'} = \frac{42\times 10^{- 9}}{4\pi\8.85\times 10^{- 12}(\frac{1.9}{2})^{2}}

\vec{E'} = 418.84 N/C

Now,

The net Electric field is given by:

\vec{E_{net}} = \vec{E} - \vec{E'}

\vec{E_{net}} = 708.03 - 418.84 = 289.19 N/C

5 0
3 years ago
If we had sent a radio signal to an advanced civilization in 2006 which is located in the zeta reticuli star system approximatel
SashulF [63]

Answer: 2045

Explanation:

Given

We had sent a radio signal to advance civilization in 2006 which is 39 light-years away i.e. time taken by light to reach reticuli star system is 39 years.

So, it will arrive the destination in the year 2006+39=2045

7 0
3 years ago
Please help! Find the time. 8 POINTS!!
Fantom [35]

Answer:

Time = 4.1 s

Explanation:

Momentum = mv = (12000)(4.25) = 51000 kg m/s

Momentum = Impulse (mv = ft) so

51000 = (9200)t

t = (51000)/(9200) = 5.54 seconds

Impulse of the current and the engine must equal so (ft = ft)

51000 = (12500)t

t = (51000)/(12500) = 4.08

But accounting for significant figures, time equals 4.1 seconds

4 0
3 years ago
Read 2 more answers
Can the magnitude of a vector ever (a) be equal to one of its components, or (b) be less than one of its components? 9. Can a pa
Ber [7]

Answer:

a) the other components are zero, in the direction of one of the coordinate axes

b) the magnitude is less than the value of one of its components, it must occur when the vector is in some arbitrary direction

9) constant velocity the acceleration must necessarily be zero,

constant speed  can be accelerated since it may be changing the direction of the velocity vector

Explanation:

Vectors are quantities that have modulo (scalar) direction and sense.

a)  If in a vector its magnitude is equal to one d its components implies that the other components are zero, therefore the vector must be in the direction of one of the coordinate axes

b) if the magnitude is less than the value of one of its components, it must occur when the vector is in some arbitrary direction, other than the direction of the axes, that is

          R² = x² + y²

where R is the magnitude of the vector e x, and are the components

9) When a particle has a constant velocity, the acceleration must necessarily be zero,

         v = vo + a t

The bold letters indicate vectors If a = 0 implies that v = vo

If a particle has constant speed it can be accelerated since it may be changing the direction of the velocity vector, this type of acceleration has the name of centripetal acceleration

6 0
3 years ago
Your car is initially at rest when your hit that gas and the car begins to accelerate at a rate of 1.464 m/s/s. The acceleration
tamaranim1 [39]

Answer:

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3 years ago
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