Ice wedging, pressure release, plant root growth, and abrasion can<span> all </span>break<span> apart</span>rocks<span>. ... When plants grow in cracks in a </span>rock<span>, their roots </span>can<span> widen the cracks and force the </span>rock<span> apart. Rainwater fills small cracks in a </span>rock<span>. As the </span>water<span> freezes, it expands, widening the cracks and splitting apart the </span>rock<span>.</span>
Answer:30.34 m
Explanation:
Given
launch angle
Initial velocity u=31.9 m/s
Position of net = 39.1 m
We know equation of trajectory of a projectile is
Therefore Net should be placed 30.34 m above ground
Answer:
The circumference will be "43,200 km".
Explanation:
As you should be directly south of Tyene, this same angular distance among both yourself as well as the town of Tyene seems to be the distinction to be made throughout the height including its sun at two positions on a specified day.
The sun is therefore immediately overhead in Tyene, does have an altitude with respect to the horizon will be:
⇒
At the very same day on yourself location, the altitude of the sun will be:
⇒
Therefore, a complete circle is 360 degrees. So the angular distinction will be somewhere between you as well as Tyene:
⇒
Therefore,
⇒
⇒
If,
Now,
The circumference =
=
Answer:
Sry but the question is not visible.......so plzz attach another image
Answer:
1.02*10^-5 C/m²
Explanation:
Given that
Radius of the smaller sphere, r = 0.05 m
Radius of the larger sphere, R = 0.12 m
Electric field, E = 2*10^5 V/m
Formula for the electric field is
E = Q/(4πεR²)
this then means that the surface charge density of the larger sphere is
Q/4πR² = Eε = 1.77*10^-6 C/m²
and
Q = 4πεER² = 3.203*10^-7 C
is the charge on the large sphere, which is the same as the charge on the small sphere since they are connected by the wire
so the surface charge density of the smaller sphere is
Q/4πr² = 4πεER²/4πr²
Q = εER²/r²
Q = 1.02*10^-5 C/m²