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When an ambulance is stationary, the siren gives off a sound at a frequency of 500 Hz. In answering the following questions assume that the speed of the sound is 340 m/s. If the ambulance is stationary, what will be the speed of a driver moving toward the ambulance if the driver perceives a frequency of 523 Hz?
The current in an RL circuit is zero at time t = 0 and increases to half its final value in 3.6 s. What is the time constant of this circuit
A pilot flies horizontally at 630 km/h, at height h = 48 m above initially level ground. However, at time t = 0, at what time t does the plane strike the ground
q. nasa sends a satellite to another planet by placing the satellite in a keplerian orbit around the sun such that the
Differentiate the amplitude of a forced oscillator to find the frequency that yields the maximum amplitude. Under what conditions is the maximum driving amplitude close to the natural frequency?
A uniform drawbridge must be held at a 37 degree angle abovethe horizontal to allow ships to pass underneath. Find the magnitude and direction of the force the hingeexerts on the bridge
The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.0 g/cm.
Calculate the Coulomb potential energy of a sphere with radius R0, uniformly charged throughout its volume with the charge Ze. Hint: calculate the total energy associated with progressive addition of thin, charged spherical shells that constitute the..
A 30nC charged particle and a 50nC charged particle are near each other. what is the magnitude of the electric field at its original position
26g of copper pellets are removed from a 300 C oven and immediately dropped into 110mL of water at 25 C in an insulated cup
The frequencies of the spectral lines in light from a distant galaxy are found to be two-thirds as great as those of the same lines in light from nearby stars. Find the recession speed of the distant galaxy
A 148 gram baseball is hit toward the left by a bat. The magnitude of the force the bat exerts on the ball as a function of time, Find the magnitude of the impulse that the bat imparts to the ball
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.40 cm, and a -2.30 µC charge is located at y = -1.60 cm. Find the total electric potential at the origin
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