Finding the wave frequency
1) A travelling wave train has a wavelength 0.5m, speed 20m/s. Find the wave frequency.
2) Approximately what fundamental frequency (in Hz) would you expect to hear as a result of blowing across the top of an empty 30cm high bottle?
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A 0.14 kg pinecone falls 17m to the ground, where it lands with a speed of 12 m/s. a) How much work was done on the pinecone by air resistance? Use two significant figures.
Suppose two 200.0 L tanks are to be filled seperately with the gases Helium and Hydrogen. What mass of each gas is needed to produce a pressure of 135atm in it's respective tank at the temperature 297K
If the probabilities of cold weather (S1), warm weather (S2), and rainy weather (S3) are 0.2, 0.4, and 0.4, respectively what is the EVPI for this situation?
Sketch a phasor diagram (not to scale). Calculate current phasors IR, IL and IT, the impedance ZRL, and the angle (theta).
(a) How long does it take the boat to reach the buoy? (b) What is the velocity of the boat when it reaches the buoy?
A professor would like to utilize the normal distribution to assign grades such that 5% of students receive A's. If the exam average is 62 with a standard deviation of 13, what grade should be the cutoff for an A? (Round your answer.)
An electron has a velocity of 1.81×104 m/s (in the positive x direction) and an acceleration of 2.11×1012 m/s2 (in the positive z direction) in uniform electric and magnetic feilds. If the electric field has a magnitude of 17.9 N/C (in t
Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes.
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