Answer: Option (B) is the correct answer.
Explanation:
Expression for centripetal acceleration is as follows.
a = .......... (1)
Also, we know that
........... (2)
Putting the value from equation (2) into equation (1) as follows.
a =
=
As,
a =
or,
Now, we will reduce a to . So, new value of will be equal to .
Therefore, value of new period will be as follows.
=
Thus, we can conclude that the new period is equal to .
Using SUVAT (S is displacement, U is initial Velocity, V is final velocity, A is acceleration, t is time);
S = 80m
U = 0ms^-1
V = ?
A = 9.8ms^-2
T = XXX
Use S U and A to find V;
V^2=U^2+2AS
V^2=0+2*80*9.8
V^2=1568
V=39.6ms^-1
Answer:
After a crime scene has been discovered, measures must be taken to secure and protect the scene from contamination. To maintain the integrity of the scene, law enforcement must take action to block off the surrounding area as well as keep track of who comes in and goes out.
[I researched for you, since I am not in that particular level to know that knowledge yet. I assure this is accurate info :)]
The answer is A, red.
"Remember, the color you see is light REFLECTING off the surface of that object. If all colors are absorbed in to the surface EXCEPT red, red must be reflected, and you'll see red." - Yahoo User @Chap