Answer:
a) 342 m/s
b) 51*10^-6 m/s
c) 0.87m/s^2
Explanation:
The following function describes the displacement of the molecules in a sound wave:
(1)
The general form of a function that describes the same situation is:
(2)
By comparing equations (1) and (2) you have:
k: wave number = 50.00 m^-1
w: angular frequency = 1.71*10^4 s^-1
A: amplitude of the oscillation = 3.00nm
a) The speed of the sound is obtained by using the formula:
b) The maximum speed of the molecules is the maximum value of the derivative of s(x,t), in time. Then, you first obtain the derivative:
The max value is:
= 51*10^-6 m/s
c) The acceleration is the max value of the derivative of the speed, that is, the second derivative of the displacement s(x,t):
Then, the maximum acceleration is:
Burning a log because you are turning the log into ash from wood.
There are 650 active muscles in your body.There are contractions of the skeletal muscles that help limbs
Answer:
2.5 Hz
Explanation:
3.0m/s / 1.2 m=2.5 1/s=2/5 Hz
Significant think why scientists presently accept is the key factor in moving information from short term memory is to deliver more the data which is rehashed or utilized, the more probable it is to end up in long-term memory.
<u>Explanation:</u>
Short-term memory (STM) envelops psychological capacities for the capacity, support, and mental control of data that is never again present in the tactile condition. So the Magic number 7 (give or take two) gives proof to the limit of transient memory.
Most grown-ups can store somewhere in the range of 5 and 9 things in their transient memory. It enables the apparent thing important to be changed over into a development that can be put away inside the brain, and afterward reviewed later from the present moment or long-term memory.