Beta particles ARE electrons.
Also, in one of the great coincidences of Physics, electrons ARE beta particles.
A. 4500*sin78=4401 N
b. 4500*cos78 = 935 N
c. this one is from geometry.
Two forces 4500N and 686N with the angle 78+90=168 in btw of them
Net force =
= 3831 N
Answer:
emission of photon is of maximum wavelength when electron transition is from n = 8 to n = 5
Explanation:
Longest wavelength for the transition means the energy difference in two levels must me minimum
So here we know that the energy of electron in a given level is
now if z = 1 for hydrogen
then Energy of electron for n = 2
Energy of electron for n = 5
Energy of electron for n = 8
Now for least energy difference we can say
So emission of photon is of maximum wavelength when electron transition is from n = 8 to n = 5
Answer:
Rotation around the front-to-back axis is called roll. Rotation around the side-to-side axis is called pitch. Rotation around the vertical axis is called yaw.
Explanation:
Answer:
the time required for the sound to travel between the whales 0.66 S.
Explanation:
As given in the problem, the velocity of sound wave () is governed by the equation
Given, and
So for salt water, the velocity of sound wave () can be written as
As the whales are d = 1 Km or 1000 m apart from each other, so the time () required for the sound wave to travel this distance is given by