Lab: Standing Waves

Wave by Sonali Deraniyagala is a life taking memoir where Sonali watched her whole family be swept away before her eyes being the only one to tell her tale. Throughout the book Sonali deals with depression and anxiety after finding out what was the cause of her family's death, A tsunami. She later explains her feelings and difficulties without her family being by her side. Relying on friends she slowly gets better by facing the one place she wanted to forget ,Sri Lanka. This was just the beginning for Sonali.

GENRE: The genre of Distant Waves is science fiction because it is something that didn't happen that has futuristic thing in it such as earthquake machines, time travel, and other advanced devices that we don't have today. It also gave scientific explanations for everything.

12. Place the magnet on the scale to measure the mass of the object. Record the mass in Data Table 5.

After the positions were recorded for frequencies 1,803 Hz, 2,402 Hz, 3,002 Hz, 3,600 Hz, and 4,201 Hz, the wavelength was determined for each. This was done by subtracting the initial position from the final position (position final–position initial=wavelength). Using the calculated wavelength, the speed of sound in air at each frequency was determined by multiplying the wavelength by the frequency (speed of sound=wavelength x frequency). By adding the five speed values and dividing by the number of speeds, the average speed of sound was calculated. Then 344 m/s was used as the accepted

Set the radius to 2.0 m, the mass to 1.0 kg, and the velocity to 10.0 m/s.

Using Gravitational Force as a Measurement Tool Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Dont forget to save your lab report to your computer Activity 1 Record your data from Activity 1 in the boxes below. Enter the data for the sample you used in each trial (5000 rpm, 10000 rpm, etc) in the appropriate columns and the corresponding g-force, number of layers, and position of layers position results. You will need to use the following formula to assist with your laboratory report G-force 0 00001118 x radius of centrifuge arm x (rpm)2 The radius of the centrifuge arm for this instrument is 10 cm. Speed 5000 rpm 10000 rpm 15000 rpm

-“The wavelength is 0.20 s.” This is wrong because wavelength’s unit is meter and it measures the distance between two adjacent locations in the disturbance, not the time one particle takes to finish one vibration.

a) Enter the following command in R to read a simple help page about the length() command:

Weigh the beaker with water in it, record this value in Data Table 1 and subtract the mass of the beaker to get the mass of the water. Record this value in Data Table 1.

10. How does varying the frequency effect contraction force? Which interval caused the greatest contraction?

Increase the length of string by about 15cm and measure the total length of the string. Record this length in the data table. Repeat this step along with steps 5-7 nine more times.

where smax is the maximum displacement or displacement amplitude, k is the angular wave number, and w is the angular frequency of the piston.

Controlled Variable – Same amount of air resistant (stay in the same room), same surface of what the trolley is going to accelerate on, same trolley, have the string equally stretched out every time and same tick rate of the ticker timer. The controlled variable will be controlled to create a fair test.

Step 9: Because we measured the lengths in centimeters rather than meters, we need to calculate are ‘g’ value into m/s2 so we can compare it to the SI unit for acceleration due to gravity. (Eg. 981.4/100 = 9.81 m/s2)

* The vibrations of the strings can be quantified and calculated according to basic laws in physics. These include certain relationships between velocity, wavelength, and frequency and equations that describe the motion of a string fixed at both ends.