As the police car approaches a brick wall it emits a sound
As the police car approaches a brick wall it emits a sound at 800Hz. The speed of the car is 100km/h. Find the beat frequency recorded by the driver of the police car as it approaches the wall. (Take the speed of sound 340m/s)
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The current through a coil having a resistance of 6 ohms and inductance of 2 H is 4 ampere. Calculate the instantaneous value of the current 50 ms after the supply is cut off.
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A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.738 V. If the silver-silver chloride electrode is replaced with a saturated calome
Explain what is meant by business risk and financial risk. Suppose Firm A has greater business risk than Firm B. Is it true that Firm A also ha a higher cost of equity capital? Explain.
As the police car approaches a brick wall it emits a sound at 800Hz. The speed of the car is 100km/h. Find the beat frequency recorded by the driver of the police car
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