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zhenek [66]
3 years ago
9

In this experiment, three different tuning forks were used. If we assume that a percent error of 5% is acceptable in determining

the speed of sound, what can we conclude about the speed of sound depend on the frequency of the tuning fork?
Physics
1 answer:
olya-2409 [2.1K]3 years ago
6 0
In the experiment, you had three tuning forks of frequency:
f₁ = 512 Hz, f₂ = 480 Hz and f₃ = 426 Hz.

Through the experiment you were able to calculate the speed of sound, finding:
v₁ = 340 m/s, v₂ = 342 m/s and v₃ = 341 m/s.

The difference in these measurements is within the 5% error, therefore you can infer that the speed of sound is independent of the frequency of the tuning forks.
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A ball is kicked from the top of a building with a velocity of 50 m/s and lands 165 m away from the base of the building.
Nadusha1986 [10]

The height of the building is 53.4 m (projectile motion)

Explanation:

The motion of the ball is a projectile motion, so it follows a parabolic path which consists of two independent motions:  

- A uniform motion (constant velocity) along the horizontal direction  

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction  

First of all, we consider the horizontal motion, which is a uniform motion at constant speed. The equation that gives the horizontal distance travelled is:

d=v_x t  

where:

v_x = 50 m/s is the horizontal velocity of the ball, which is constant since there are no forces in this direction

d = 165 m is the horizontal distance travelled by the ball

Solving for t, we find the time of flight:

t=\frac{d}{v_x}=\frac{165}{50}=3.3 s

Now we analyze the vertical motion: it is an accelerated motion, we can use the suvat equation

s=ut+\frac{1}{2}at^2  

where  

s is the vertical displacement, which is the height of the building

u = 0 is the initial vertical velocity of the ball

t = 3.3 s is the time of flight

a=g=9.8 m/s^2 is the acceleration of gravity  

Solving for s, we find the height of the building:

s=0+\frac{1}{2}(9.8)(3.3)^2=53.4 m

Learn more about projectile motion here:

brainly.com/question/8751410

#LearnwithBrainly

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