As we know, period (t)of a wave and it's frequency (f) are Reciprocal of each other, so if one is know then we can just reverse the order to get the other one.
that is :
Now, let's move on to problems ~
# 11. f = 15 hertz, t = ?
#12. f = 292 hertz, t = ?
#13. t = 12 seconds, f = ?
Answer:
v = 73.75 m/s
Explanation:
It is given that,
A rocket rises vertically, from rest, with an acceleration of 3.2 m/s² until it runs out of fuel at an altitude of 850 m.
Let us assume we need to find the velocity of the rocket when it runs out of fuel.
Let v is the final speed. Using the third equation of kinematics as :
u = 0
So, the velocity of the rocket when it runs out of the fuel is 73.75 m/s
The answer is A. Have you ever heard the saying, opposites attract? That comes from magnetism. Like poles repel each other while opposites attract.
Answer:
Hi, you should try your best to answer.
Explanation:
I’d say b, but don’t take my exact word for it