Coriolis effect creates <span>ocean currents to flow in a particular pattern.
</span>It is an effect in which the mass experiences a force which<span> acts perpendicular to the direction of motion and to the axis of rotation.
</span>
<span>A. Coriolis effect</span>
Small molecules are able to pass through a cell membrane because the membrane itself is semipermeable. Larger molecules require the cell expend energy to transport the molecules across the cell membrane, usually by engulfing them.
Explanation:
The universal wave equation states that the velocity of a wave is the product of its wavelength and its frequency.
Mathematically speaking,
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
v
=
λ
f
a
a
∣
∣
−−−−−−−−−−−
where
−−−−−
:
v
=
velocity of wave (metres per second)
λ
=
wavelength (metres)
f
=
frequency (hertz or reciprocal seconds)
Step 1
Convert the given wavelength from centimetres into metres.
3.0
i
c
m
×
m
100
i
c
m
=
3.0
c
m
×
m
100
c
m
=
0.030
i
m
Step 2
Rearrange for frequency,
f
, in the universal wave equation.
v
=
λ
f
Becomes,
f
=
v
λ
Step 3
Substitute your known values to solve for the frequency of the pulse.
f
=
1500
i
m
s
0.030
i
m
f
=
50000
i
H
z
Rounding off the value to two significant figures,
f
=
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
5.0
×
10
4
i
H
z
a
a
∣
∣
−−−−−−−−−−−−−−−−
Answer:
First two rings are thicker while the last two rings are thinner.
Explanation:
Due to the first two years of optimal growing conditions received by the tree, the width of trunk of the tree is thicker but due to drought conditions experienced by the tree during the most recent two years, there is very little increase occur in the width of the trunk because the tree is in stress condition and for that reason the ring of trunk is thinner as compared to first two years.
