Answer: B
Explanation:
<em>Velocity</em> is the speed of an object <u>but in a particular direction. </u>
<u></u>
If you look, answer choices A, C, and D, all give certain speeds, but they don't give any direction, like north east west or south. Only B gives the speed in a particular direction (north).
Hope this helps :))
An image that a concave mirror can make is that it <span>can form a real image that is projected out in front of the mirror. </span>A concave mirror<span> is a mirror that is curved inward in the middle. Using the mirror equation, you can deal with concave mirrors. It's like you're looking into a cave when try to look in a concave mirror.</span>
Angular velocity means how many radians/degrees is this hand passing by every second.
First, you realize it goes through a whole revolution (2
in radians) in 60 seconds.
This means for every second, it passes by:
For the next part, you need to know this equation:
Tangential velocity=Angular velocity x radius (meters)
Answer:
D. The oxygen side is partially negative because electrons are pulled toward the oxygen side.
Explanation:
The water molecule is polar by the virtue of covalent bonds and the hydrogen bonds within and between its molecule.
The oxygen side is partially negative because the electrons are pulled toward the oxygen side.
Between oxygen and hydrogen that makes up the water molecule, oxygen is more electronegative.
An electronegative atom has more affinity for electrons. Since the electrons in the molecule of water is shared between hydrogen and oxygen, the more electronegative specie which is water draws the electron more to itself.
This leaves a net negative charge on the oxygen atom.
