Answer:
<u><em>A. wavelength</em></u>
Explanation:
The others are about sound and how high it is. That has nothing to do with time.
For an uniformly accelerated motion, we can write

where

is the acceleration of this motion, which in this problem is the gravitational acceleration, with a negative sign because it points downward, against the direction of the motion; h=0.540 m is the distance covered by the flea, and

is the initial velocity.
At the maximum height, the velocity is zero, so

. Therefore we can solve to find

:
Answer:
Explanation:
impedance z=(XL^2+R^2)^1/2
power across te resistor ==i^2r
286/300
I=.976
Answer:
2.72*10-3 Joules
Explanation:
From Newton's second law of motion
F=ma

given


the angular velocity is


