Speed of sound at the temperature
You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 1.2% lower than the emitted frequency. The speed of sound at the temperature that day is 349 m/s. What is your speed?
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Two pieces of steel are held together with six bolts. Calculate the diameter of the bolts needed to support the load.
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An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object?
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The most common expression of ageism I think in society today is that of being labeled as slow movers because, of visible signs of decreased youth
A 0.410 kg pendulum bob passes through the lowest part of its path at a speed of 3.13 m/s. What is the tension in the pendulum cable at this point if the pendulum is 76.2 cm long?
The permittivity of vacuum is 8.85 × 10-12 C2/N · m2. What plate radius is required if the stored charge is -1.03 μC?
A 50.0g sample of water at 70.0 degrees C is mixed with 90.0g of water at 25.0 degrees C. What is the final temperature of the mixture?
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