Mass on the same spring oscillates with a period
An object of mass 1.60 kg is oscillating freely on a vertical spring with a period of 0.710 s. Another object of unknown mass on the same spring oscillates with a period of 1.26 s.
(a) Find the spring constant k.
(b) Find the unknown mass
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A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 43.0 vibrations in 25.0 s. Also, a given maximum travels 422 cm along the rope in 8.0 s. What is the wavelength?
Transverse waves with a speed of 52.0 m/s are to be produced on a stretched string. A 5.40-m length of string with a total mass of 0.0600 kg is used. (a) What is the required tension in the string?
Calculate the magnitude of the total acceleration of her car immediately after she passes point B. Assume BC to be a part of a circular path. [So, AB is a straight line while BC is a circular arc.]
A new method of treatment is hypothesized to reduce the days patients are hospitalized after surgery. For a sample of 100 patients, the mean number of days of hospitalization is 5, with a standard deviation of 2.5. What is the 95% confidence limit
Using a = .05, test to see if there is a significant difference among the means of the three populations (using either the p-value or critical value approach). In other words, what conclusion can you make about whether there is or is not enough ev
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Consider a regenerative Rankine cycle with a 600C and 4-MPa throttle, a 5-kPa condenser, and an open feedwater heater at 500 kPa. Calculate the cycle efficiency, and compare it with the simple-cycle efficiency.
What is the value of the test statistic? Answer is t= 2.04 but need an explanation of how to get it.
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