Answer:
The acceleration of Chevy Corvette is .
Explanation:
Given that,
Initial speed of Chevy Corvette Z06, u = 0 (it starts from rest)
Final speed of Chevy Corvette Z06, v = 60 mph
1 mph = 0.44704 m/s
60 mph = 26.82 m/s
Time, t = 3 seconds
We need to find the acceleration of Chevy Corvette. The rate of change of velocity is called acceleration of an object. It is given by :
So, the acceleration of Chevy Corvette is . Hence, this is the required solution.
Answer:
The density of the block is 7.4g/ml.
Explanation:
We can determine the volume of the metal block by taking the difference between the volumes measured in the graduated cylinder:
Now, as we know that the average density of an object is calculated dividing its mass by its volume, we can calculate the density ρ of the metal block using the expression:
Finally, it means that the density of the metal block is 7.4g/ml.
To solve this problem it is necessary to apply the concepts related to wavelength as a function of speed and frequency. In mathematical terms it can be expressed as
Where,
v = Velocity
f = Frequency
According to our values the frequency (f) is 320Hz and the speed (v) is 339m / s.
Replacing in the given equation we have to,
Therefore the wavelength of this sound wave is 1.06m