Answer:
False
Explanation:
Vector has a magnitude and direction.
A scalar is just a magnitude or size.
The relevant equation we can use in this case would be:
v^2 = v0^2 + 2 a d
where:
v is our final velocity or landing velocity = ?
v0 is the initial velocity = 5 m/s
a is acceleration due to gravity = 9.81 m/s^2
d is distance = 25 m
So:
v^2 = 5^2 + 2 (9.81) 25
v^2 = 515.5
<span>v = 22.70 m/s</span>
Answer:
are chemical processes and not nuclear processes. Nuclear reactions do indeed occur in the human body, but the body does not use them. Nuclear reactions can lead to chemical damage, which the body may notice and try to fix.
B. Closed because otherwise the energy would "escape"
Explanation:
The figure that accompanies the question shows the wavelenghts of the photons emitted according to Balmer series transition , from energy levels (n) 3, 4, 5, and 6 to the energy level (n) 2, in hydrogen atoms.
These are the values shown in the figure
Transition wavelength of the photon emitted
nm
from n = 3 to n = 2 656 <------------- this is the value requested
from n = 4 to n = 2 486
from n = 5 to n= 2 434
from n = 6 to n = 2 410
The wavelength of a photon emitted from the n = 3 shell in hydrogen is the first data of the table, i.e 656 nm.
Using the conversion factor from nm to m that result is:
656 nm * 1 m / (10^9 nm) = 656 * 10 ^ - 9 m.