A torpedo fired from a submerged submarine is propelled through the water with a speed of 20.00 m/s and explodes upon impact with a target 2000.0m away. If the sound of the impact is heard 101.4s after the torpedo was fired, what is the speed of sound in water?
(becuz the torpedo is held at a constant speed by its propeller, the effect of water resistance can be neglected)
Isn't this just
distance = rate*time?
2000 = 20*time , solve for time,
t = 2000/20 = 100 seconds is how long it took the torpedo to get to the target.
It took 101.4 seconds after the torpedo was fired to hear the sound and 100 seconds was required for the torpedo to make the trip to the target; therefore, it took 1.4 seconds for the sound to get back to the submarine.
2000 = r*(1.4). Solve for rate.
I get about 1,500 or so. See here for the speed of sound in water. Check my thinking. Check my work.
http://en.wikipedia.org/wiki/Speed_of_sound#water
Well, if the torpedo hit the target 2000.0m away and it took 101.4s for the sound of the impact to be heard, then the speed of sound in water can be calculated.
Now, we know that speed = distance / time. So, the speed of sound in water can be calculated as the distance (2000.0m) divided by the time (101.4s).
Let's do the math: 2000.0m / 101.4s = 19.7 m/s.
So, the speed of sound in water is approximately 19.7 m/s. Water isn't known for being a great conductor in the comedy world, but it sure does a good job at transmitting sound!
To find the speed of sound in water, we can use the equation:
Speed = Distance / Time
In this case, the distance is the total distance traveled by the torpedo (2000.0 m), and the time is the time interval between firing the torpedo and hearing the sound of the impact (101.4 s).
Therefore, the speed of sound in water can be calculated as follows:
Speed of sound in water = Distance / Time
= 2000.0 m / 101.4 s
Calculating this, we find:
Speed of sound in water = 19.705 m/s
Therefore, the speed of sound in water is approximately 19.705 m/s.
To find the speed of sound in water, we can use the formula:
Speed of sound = Distance / Time
In this case, the distance is the total distance covered by sound, which is the distance between the submarine and the target, given as 2000.0 m.
The time is the time it takes for the sound of the impact to reach the observer. In this case, it is given as 101.4 s.
Substituting the values into the formula:
Speed of sound = 2000.0 m / 101.4 s
Calculating this, we get:
Speed of sound = 19.72 m/s
Therefore, the speed of sound in water is approximately 19.72 m/s.