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Question: An ambulance is traveling east at 60m/s. Behind it there is a car traveling along the same direction at 34.3 m/s. The ambulance driver hers his siren at a frequency of 934 Hz. The speed of sound is 343 m/s. At what frequency does the driver of the car hear the ambulance's siren? Answer in Hz.
a cube of wood floating in water supports a 200g mass at the centre of its top face. when the mass is removed, the cube rises by 2cm. determine the volume of the cube
A length of aluminum wire has a resistance of 16.0 ? at 28.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, find the temperature of the oven
a sinusoidal transverse wave moves along a stretched string in the +j direction with amplitude 5 cm, wavelength 2 m, and wave speed 200 m/s. Write a possible wave function for the wave with an explanation
A resistor with 325? and an inductor are connected in series across an ac source that has voltage amplitude 520V . The rate at which electrical energy is dissipated in the resistor is 234W. What is the amplitude of the voltage across the inductor
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A thin, uniform rod has length L and mass M . Calculate the magnitude of the gravitational force the rod exerts on a particle with mass m
A collision between two pucks on an air-hockey table. Puck A has a mass of 0.025 kg and is moving along the x-axis with a velocity of +5.5 m/s. It makes a collison with puck B, which has a mass of 0.050 kg and is initially at rest.
A source emits sound uniformly in all directions. There are no reflections of the sound. What is the total sound power P emitted by the source
When the brakes of a certain car are applied, a deceleration of 6.0 m/s^2 is produced. How far will it travel in that time
A meteorologist in a TV station is using radar to determine the distance to a cloud. How far away is the cloud
Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99×1030 kg), and the orbital radius of Neptune of 3.00×101A.U
An empty storage tank has a volume of 135 ft3. What is the buoyant force exerted on it by the air
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