<span>D. Pressure increases with increasing depth.
This occurs because there is more weight above you to increase the pressure.
</span>
Answer:
Explanation:
Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. ... The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.
K is cation by losing of electron whereas Br is anion due to accepting of electrons.
<h3 /><h3>Is charge appears when an atom lose or accept electron?</h3>
Yes, the positive ion appears on K and become cation whereas the negative ion bears on Br which make it anion because of losing and gaining of electron by these atoms. This transferring of electrons leads to formation of ionic bonds between them.
So we can conclude that K is cation by losing of electron whereas Br is anion due to accepting of electrons.
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Answer:
Explanation:
Let the frictional force required be f .
frictional force is responsible in creating rotational motion in the cylinder.
torque created by frictional force = f R
if angular acceleration be α
α = f R / I , I is moment of inertia of cylinder .
α = a / R , a is linear acceleration.
f R / I = a / R
a = f R² / I
linear acceleration a of cylinder down the slope
ma = mgsinθ - f , ( f force is acting upwards and mgsinθ is acting downwards )
mf R² / I = mgsinθ -f
f ( m R² / I + 1) = mgsinθ
f = mgsinθ / ( m R² / I + 1)
= mgsinθ / ( m R² / mk² + 1) , k is radius of gyration of cylinder.
= mgsinθ / ( R² / k² + 1)
Putting the given values
f = Mgsinβ /( R² / k² + 1)
for cylinder , R² / k² = 2
f = Mgsinβ /3
1) The mass of the continent is 
2) The kinetic energy of the continent is 1683 J
3) The speed of the jogger must be 6.57 m/s
Explanation:
1)
The continent can be represented as a slab of size

and depth

So its volume is

We also know that the density of the continent is

Therefore, we can calculate its mass as:

2)
The kinetic energy of the continent is given by

where
m is its mass
v is its speed
We have already calculate its mass, while the speed is
v = 3.2 cm/year
We have to convert into SI units first, as follows:

The mass is

So, the kinetic energy of the continent is

3)
Here we have a jogger having the same kinetic energy of the continent, so

And the kinetic energy of the jogger can be expressed as

where
m = 78 kg is the mass of the jogger
v is his speed
We can therefore re-arrange the equation to find the speed of the man, and we get:

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