Answer:
a)
b)
Explanation:
Given:
mass of ball,
initial speed of the ball,
mass of the person,
a)
Using the conservation of linear momentum:
When the person catches the ball, assuming that the person catches it with an impact without absorbing the shock.
b)
When the ball hits the person and bounces off with the velocity of .
Using the conservation of linear momentum:
where:
final speed of the ball after collision
final speed of the person after collision
initial velocity of the person = 0
putting the respective values in the above eq.
Answer:Infrared light has a wavelength that is longer than that of standard red light, and although considered part of the red color spectrum, infrared wavelengths are still much shorter
Answer:
a) rotate counterclockwise as viewed from above.
Explanation:
The text tells us it is spinning counterclockwise.
Answer:
1. line of best fit---(a line that best represents the trend of the data)
2. slope---(the change in the y variable compared to the change in the x variable between two points on a graph)
3. variable---(a quantity that changes during an experiment)
Explanation:
Technically the variable one could be considered wrong, as some variables stay the same, but otherwise these are the answers.
Answer:
<em>Nonpolar molecules</em>
Explanation:
Nonpolar molecules are those molecules that are produced by the union between atoms that have equal electronegativity, so the forces with which the atoms that make up the molecule attract the electrons of the bond are equal, thus causing the cancellation of these forces. An example of an nonpolar molecule is the Oxygen (O2) molecule. In this molecule each oxygen atom attracts the electrons shared towards itself with the same intensity but in opposite directions, therefore the forces of attraction are annulled and the molecule does not become a dipole.