What is stress and strain?
1 answer:
You might be interested in
Answer:
t=18s
Explanation:
The final position of an object moving at constant speed is given by the formula , where
is its initial position, v its speed and t the time elapsed.
For the cheetah we have , and for the gazelle
. We want to know at which t their positions are equal, that is,
, which means,
Where we can do:
We then substitute the values we have (the initial position of the cheetah is 0m), writing the meters in km so distance units cancel out correctly:
On the last step we just multiply by 3600 because is the number of seconds in an hour.
Answer:
Explanation:
Speed is just the magnitude of velocity and has no direction. This means that we are just going to take out the direction, "West".
Answer:
(1)
(2) but
transition not allowed.
Explanation:
Atoms can be described by the quantum number n, spin quantum number S, angular momentum quantum number L, and total angular momentum quantum number J. Based on approximation Russel- Saunders electron coupling, the atomic term symbol can be written as .
The conditions or selection rule to promoting the electron are discussed below:
(1) The total spin should not change that is .
(2) The total angular momentum change should be, but
transition not allowed.