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Leviafan [203]
4 years ago
9

Transfer of heat in motions of humid air without temperature differences is exclusively via ____________ heat transfer.

Physics
1 answer:
Orlov [11]4 years ago
8 0
<span>Heat transfer is by convection, conduction, or radiation. </span>
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If you are at latitude 43 degrees north of Earth's equator, what is the angular distance (in degrees) from your zenith to the no
kirill115 [55]

Answer:

Your zenith is 43 N of 90 deg (equator)

Thus, your zenith is 90 - 43 = 47 deg

(At the N pole your zenith would be 0 deg from the N pole)

8 0
2 years ago
PLEASE HELP! **
Eduardwww [97]
It moves to 56 km per hours
8 0
4 years ago
In a tank full of water, the pressure on a surface 2 meters below the water level is 1.5 kPA. What's the pressure on a surface 6
Lina20 [59]

Answer:

P = 40.7kPa

Explanation:

To find the pressure on a surface 6 meter below you use the following formula, which takes into account the heights in which pressures are measured and also the density of the fluid and the gravitational acceleration:

P_2-P_1=-\rho g(y_2-y_1)             (1)

P2: pressure for a height of -6 m = ?

P1: pressure for a height of -2 m = 1.5kPa = 1500 Pa

ρ: density of water = 1000kg/m^3

g: gravitational acceleration = 9.8 ms^2

y2: -6m

y1: -2m

(the height is measure from the water level, because of that, the heights are negative)

You solve the equation (1) for P1:

P_1=P_2-\rho g(y_2-y_1)         (2)

Next, you replace the values of all variables in equation (2):

P_2=1500Pa-(1000kg/m^3)(9.8m/s^2)(-6-(-2))m=40700Pa\\\\P_2=40.7kPa

hence, the pressure on a surface 6 m below the water level is 40.7kPa

5 0
3 years ago
A scientist is testing the seismometer in his lab and has created an apparatus that mimics the motion of the earthquake felt in
otez555 [7]

Complete Question

The complete question is shown on the first uploaded image  

Answer:

a

 a_{max} = 0.00246 \  m/s^2

b

   k  =722.2 \ N/m

Explanation:

From the question we are told that

     The  amplitude is A  = 1.8 \ cm  =  0.018 \ m

     The period is T  = 17 \ s

    The test weight is  W =  13 \ N

Generally the radial acceleration is mathematically represented as

        a =  w^2 r

at maximum angular acceleration

       r =  A

So  

       a_{max} =  w^2 A

Now w is the angular velocity which is mathematically represented as

      w =  \frac{2 * \pi }{T}

Therefore

       a_{max} =  [\frac{2 *  \pi}{T} ]^2 * A

substituting values

       a_{max} =  [\frac{2 *  3.142}{17} ]^2 * 0.018

       a_{max} = 0.00246 \  m/s^2

Generally this test weight is mathematically represented as

     W =  k *  A

Where k is the spring constant

Therefore

        k  = \frac{W}{A}

substituting values        

      k  = \frac{13}{0.018}

     k  =722.2 \ N/m

7 0
3 years ago
A football is kicked 18m/s at 20 degrees. what is the acceleration rate in the horizontal direction
fomenos

If we ignore air resistance, as we always do,
there is no horizontal acceleration.

Gravity acts only in the vertical direction, and
no other forces act on the ball after the punt.

6 0
4 years ago
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