The equation for density goes as follows:
where D stands for density, m stands for mass, and v stands for volume
You plug in your values, and you get...
which turns out to be
Answer: W = 6.4x10⁻²¹J
Explanation: <u>Work</u> is the energy transferred to or from an object due to the application of a force along a displacement.
The ion Na is gaining energy to move from a lower potential to a higher one.
For this to happen, the work done is calculated as
in which
W is work in Joules (J)
q is charge in Coulomb (C)
is potential difference in Volts (V)
The ion Na has one positive charge. In coulombs, the charge is
q = 1.6x10⁻¹⁹C
The potential difference in Volts is
= 40x10⁻³ or 4x10⁻²V
Calculating
W = 1.6x10⁻¹⁹. 4x10⁻²
W = 6.4 x 10⁻²¹ J
The work done to move an ion of sodium from the exterior to the interior is 6.4 x 10⁻²¹ J.
Answer:
Cohesion is the correct answer
Explanation:
Water molecules are held together by hydrogen bonds. Water molecules stick to other water molecules. Surface Tension. Creates the skin-like surface formed due to the polar nature of water.
Water is sticky because of hydrogen bonds. Water has a remarkable capacity to hold to itself and other objects. The capacity of water molecules to be attracted to other water molecules, allowing water to be a "sticky" liquid, is described by the Characteristic of cohesion.
(hope this helps can I pls have brainlist (crown) ☺️
Answer: A
Explanation: the change in seasons is caused by Earths axis tilt and revolution and position near the sun
They differ from each other
