The required period of the wave is 0.125 seconds.
In physics, frequency and period are two related concepts that are used to describe the properties of waves. Period, on the other hand, is a measure of the time it takes for one complete cycle of a wave.
Frequency is a measure of how many cycles of a wave occur in one second. It is measured in units of Hertz (Hz), which is defined as cycles per second.
Here,
The period (T) of a wave is the time it takes for one complete cycle of the wave. It is related to the frequency (f) of the wave by the formula:
T = 1/f
Where T is in seconds and f is in Hertz (Hz).
Given that the frequency of the wave is 8 Hz, we can calculate the period as follows,
T = 1/f
T = 1/8
T = 0.125 seconds
Therefore, the period of the wave is 0.125 seconds.
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B. density=mass*volume
C. density=volume/mass
D. density=mass + volume
Answer:
My answer is A.
Explanation:
by using a density triangle, you would have to cover up the density and then it will show you, m over v. so that means you would have to divide.
The baseball will undergo 16 revolutions on its way to home plate.
Explanation:
As the parameters which are given are speed at which the baseball is thrown, (v = 90 mi/h) and the distance between the home plate and the ball thrown is 60 ft. Also the spin is said to 1950 rev/min, it indicates that the ball will undergo 1950 revolution in every single minute. So in order to determine the number of revolutions the baseball will make in its way to home plate, we have to first determine the time taken for the baseball to reach its home plate with the given speed.
As we know that speed can be obtained by the ratio of distance with time, in the present case, we know the speed and distance, then time can be obtained by ratio of distance with speed.
At first, we have to convert the speed from mi/h to ft/min
1 mi/hr = 5280/ 60 ft/min = 88 ft/min.
Then, Time = Distance/Speed = 60/(90×80)=60/7200=8.33 × 10⁻³ min
Since the ball undergoes 1950 revolutions in 1 min, then in 8.33 × 10⁻³ min, the number of revolutions will be 1950×8.33 × 10⁻³ = 16 rev
Thus, the baseball will undergo 16 revolutions on its way to home plate.
Benjamin Banneker did this in 1792. Hope this helps