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A sound wave with a frequency of 260 Hz has a wavelength of 1.30m what is the speed of the wave?
Wiki User
∙ 8y ago
Speed of the wave = frequency x wavelength
So c = 260 x 1.30 = 338 m/s
+++ IN air at standard temperature & pressure. That is important because the speed varies with the density of the medium through which it travels. In sea-water the mean speed of sound is just under 1500m/s, varying slightly with salinity and temperature hence density.
Wiki User
∙ 8y ago
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A car drives off a vertical cliff that is 122.5m tall If the car lands 100m from the base of the cliff what was the cars speed as it drove off the cliff?
Equation: v=d/t, meaning velocity equals distance divided by the time interval. Divide 54m by the five to get the time. Then divide 130m by the time you got to get the speed; also known as velocity. Answers: Time= 10.8, Speed= 12.04m/s I wonder where I got the 5 from... ========================================================== Figure out your knowns and unknown in the horizontal and vertical components. x=130m, Vxo=?, ax=0, y=-54m, Vyo=0, ay=-9.8m/s2 Next, figure out the time it takes for the car to drive off the cliff using this equation for the Y component and solving for t: y=y0+vyo+1/2gt2 y=0+0 +1/2(-9.8)t2 y=-1/2gt2, solving for t yields: t= sq root of 2y/-g. If all adds up well should equal 3.32s Next, solve for the x components using this equation: x=xo=vxo=1/2gt2 solving for vxo=x/t which equals 130 m/3.32s= 39.2 m/s I hate physics.
An arrow with a mass of 30g is shot straight up to a height of 130m what is the arrow's initial velocity Please help?
Initial speed when it left the bow = 'V'Final speed when it reached peak height = zeroAverage speed during the climb = 1/2 VDistance of the climb = (average speed in the climb) x (time in the climb)130 = (1/2 V) x (time in the climb)Time = 130 / (1/2 V) = (260) / VBut we also know that the upward speed decreases by 9.8 m/s every second,because of the acceleration of gravity. So the time spent in the climb is (V / 9.8).V / 9.8 = 260 / VMultiply both sides by V:V2 / 9.8 = 260Multiply both sides by 9.8:V2 = 9.8 x 260 = 2,548V = sqrt(2548) = 50.48 meters per second (rounded)=======================================One important thing to mention: The mass of the arrow doesn't matter. An arrow, a bullet, a rock,a cannonball, or a rocket ship, all do exactly the same thing if the initial velocity is the same.That's the way gravity works. If there's any difference, it's only on account of air resistance.
A 130m long train crosses a bridge in 30 seconds at 45 kmph The length of the bridge is?
245m
Where do you get a santa hat on RuneScape?
you can either get it in the party room in falador or you can get it through trade or spend over 130m on one at the GE
What is the best estimate for the length of a school bus?
Which is the best estimate for the weight of a bus
How far can man swim in a minute?
There is no official record for distance swum in a minute, however the closest world records are: 100m = 44.94s which equates to 133m in a minute 200m = 100.83s which equates to 119m in a minute I would have thought the swimming speed achieved for a a minute would be closer to the 100m time therefore I would guess a top swimmer could swim around 130m in a minute
As far as digital art and animation, what does this laptop have to offer?
The Asus N90SV-A1, comes with an Nvidia GeForce GT 130M graphics card with 1GB of video memory,and it takes on gaming and animation with ease.
The perimeter of a rectangle is 130m. The length of the rectangle is 25m more than the width. What are the lengths and widths of the rectangle?
x=width x+25=length 4x+50=130 4x=80 x=20 width is 20 length is 45
What is the biggest jack up rig in the north sea?
mpi resolution Name: Mpi Resolution MMSI: 210903000 [CY] IMO: 9260134 Callsign: C4SN2 Speed/Dir: 0 kts / 227° SW Status: Default (15) Dest: ETA: ***00 24:60 Type: Dredger/Underwater Ops. (33) Details: Work / Repair Vessel Size: 130m x 38m x 4.1m Tonnage: 14085gt, 7000dwt Built: Nov 2003
How many laps of a GAA pitch is 2.4km?
A GAA pitch's dimensions are flexible. According to the GAA rules, they can be between 130m (metres) to 145m long and 80m to 90m wide. Based on the largest, it is about 5.1 laps and on the smallest it would be about 5.7 laps.
The perimeter of a rectangle is 130m The length is 2m more than twice the width What are the lengths and widths of the rectangle?
P = 130, so L + W = 65. 65 - 2 = 63, 63/3 = 21 m which is the width, making the length 21 + 21 + 2 ie 44 m
A car drives off a vertical cliff that is 122.5m tall If the car lands 100m from the base of the cliff what was the cars speed as it drove off the cliff?
Equation: v=d/t, meaning velocity equals distance divided by the time interval. Divide 54m by the five to get the time. Then divide 130m by the time you got to get the speed; also known as velocity. Answers: Time= 10.8, Speed= 12.04m/s I wonder where I got the 5 from... ========================================================== Figure out your knowns and unknown in the horizontal and vertical components. x=130m, Vxo=?, ax=0, y=-54m, Vyo=0, ay=-9.8m/s2 Next, figure out the time it takes for the car to drive off the cliff using this equation for the Y component and solving for t: y=y0+vyo+1/2gt2 y=0+0 +1/2(-9.8)t2 y=-1/2gt2, solving for t yields: t= sq root of 2y/-g. If all adds up well should equal 3.32s Next, solve for the x components using this equation: x=xo=vxo=1/2gt2 solving for vxo=x/t which equals 130 m/3.32s= 39.2 m/s I hate physics.
An arrow with a mass of 30g is shot straight up to a height of 130m what is the arrow's initial velocity Please help?
Initial speed when it left the bow = 'V'Final speed when it reached peak height = zeroAverage speed during the climb = 1/2 VDistance of the climb = (average speed in the climb) x (time in the climb)130 = (1/2 V) x (time in the climb)Time = 130 / (1/2 V) = (260) / VBut we also know that the upward speed decreases by 9.8 m/s every second,because of the acceleration of gravity. So the time spent in the climb is (V / 9.8).V / 9.8 = 260 / VMultiply both sides by V:V2 / 9.8 = 260Multiply both sides by 9.8:V2 = 9.8 x 260 = 2,548V = sqrt(2548) = 50.48 meters per second (rounded)=======================================One important thing to mention: The mass of the arrow doesn't matter. An arrow, a bullet, a rock,a cannonball, or a rocket ship, all do exactly the same thing if the initial velocity is the same.That's the way gravity works. If there's any difference, it's only on account of air resistance.
How much did The Lord of the Rings cost to make?
Production budget (including advertising) for the the LOTR films was just under $430M. Worldwide gross for the films was just under $3 billion dollars. The DVD sales are estimated to be another few hundred million. Production cost $300M, prints and advertising cost $130M. All information I've ever seen indicates that they came in on time and right at the projected cost.
