Answer:
a)the possible frequencies are 521hz ,522hz, 523, 524hz,525hz
b) 526hz
c)0.989 or a 1.14% decrease in tension
Explanation:
a) While tuning a string at 523 Hz,piano tuner hears 2.00 beats/s between a reference oscillator and the string.
The possible frequencies of the string can be calculated by
fl=f' - B
where
fl= lower limit of the possible frequency
f'= frequency of the string
B= beat heard by the tuner
fl= 523hz + Or - (2beats/secs * 1hz/1beat per sc)
fl= 521hz or 525hz
So the possible frequencies are 521hz ,522hz, 523, 524hz,525hz
b)fl=f' - B
523hz= f' - 3
f'= 523 + 3= 526hz
c) The tension is directly proportional to the square of the frequencies
T1/T2 =f1^2/f2^2
523^2 / 526^2 = 0.989 or a 1.14% decrease in tensio
<h3>
Answer:</h3>
225 meters
<h3>
Explanation:</h3>
Acceleration is the rate of change in velocity of an object in motion.
In our case we are given;
Acceleration, a = 2.0 m/s²
Time, t = 15 s
We are required to find the length of the slope;
Assuming the student started at rest, then the initial velocity, V₀ is Zero.
<h3>Step 1: Calculate the final velocity, Vf</h3>
Using the equation of linear motion;
Vf = V₀ + at
Therefore;
Vf = 0 + (2 × 15)
= 30 m/s
Thus, the final velocity of the student is 30 m/s
<h3>Step 2: Calculate the length (displacement) of the slope </h3>
Using the other equation of linear motion;
S = 0.5 at + V₀t
We can calculate the length, S of the slope
That is;
S = (0.5 × 2 × 15² ) - (0 × 15)
= 225 m
Therefore, the length of the slope is 225 m
Answer:
no the moon does not rotate it only goes in circle just like the sun so I disagree with your friend
Answer is on the image with the explanation. I hope that might help you with the answers
