You hit a golf ball 30.0 meters to the south and overshoot the hole. You then hit the ball another 5.0 m to the north. The dista
2 answers:
Answer:
The distance is 35.0 m
Explanation:
- Distance corresponds to the amount of space travelled by an object, regardless of the direction of the motion. Therefore, if an object moves several times into different directions, the distance can be simply calculated by adding the distance covered during each motion.
In this case, the ball moves a first time by and a second time by
, so the total distance is
- Displacement corresponds instead to the spatial difference between the starting point and the final point of the motion: since the ball here travelled 30.0 m south and 5.0 m north, we must take into account the opposite directions in the two motions, by adding a negative sign. So, the displacement of the ball is
(in the south direction)
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The question is: A tuning fork vibrates at 140 [Hz] and the wave emitted by it propagates with a speed of 340 m / s. Considering the above, it can be correctly stated that the wavelength of the wave emitted by the tuning fork is
Answer: Wavelength of the wave emitted by the tuning fork is 2.43 m.
Explanation:
Given: Frequency = 140 Hz
Speed = 340 m/s
wavelength = ?
Formula used to calculate the wavelength is as follows.
where,
= wavelength
v = speed
f = frequency
Substitute the values into above formula.
Thus, we can conclude that wavelength of the wave emitted by the tuning fork is 2.43 m.