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A racecar approaches the start/finish line of a race track with a speed of 100 m/s. A speaker (called the ground speaker) next to the start/finish line emits a tone of frequency 256 Hz (middle C on a piano). A second speaker on the racecar (called the car speaker) also emits a tone of frequency 256 Hz. A listener on the ground hears the car speaker at a Doppler shifted frequency. The driver of the car hears the ground speaker at a Doppler shifted frequency as well. Take the speed of sound in air to be 340 m/s. A) The Doppler shifted frequency observed by the person on the ground is Hz. B) The Doppler shifted frequency observed by the driver is Hz. C) Explain (using Physics not Mathematics) why there is a difference between the two observed frequencies even though the relative speed between both source and observer is the same in both cases.
The safe slides with a constant speed if Clyde pushes from behind with 420 {rm N} of force while Bonnie pulls forward on a rope with 285 {rm N} of force. Illustrate what is the safe's coefficient of kinetic friction on the bank floor?
A rifle with a barrel length of 65 cm fires a 9 g bullet with a horizontal speed of 380 m/s. find resistive force does the wood exert on the bullet
The magnetic field in a solenoid is B = (µ0NI) / d. A circular wire of radius 10 cm is concentric with a solenoid of radius 7 cm, What is the non-Coulomb electric field in the wire
An 1150-kg car pulls a 450-kg trailer. The car exerts a horizontal force of 3,800 N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effective friction coefficient of 0.15 for the trailer.
You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. What is the maximum horizontal range of your gun
Plane monochromatic waves with wavelength 550nm are incident normally on a plane transmission grating having 360slits/mm. Find the angle of deviation in the third order
A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of vi = 2.50 m/s. Use energy considerations to find the distance the sled moves before it stops
A solid disk of radius 1.60 m and mass 2.3 kg rolls without slipping to the bottom of an inclined plane. what is the height of the inclined plane
Find the magnitude of the magnetic flux through the floor of a house that measures 23m by 18m . Assume that the Earth's magnetic field at the location of the house has a horizontal component of 2.4×10^?5T pointing north, and a downward vertical compo..
compute the total energy radiated by the Sun each second.
What is the magnitude of the runner's total displacement . What is the phase difference between the two waves next they reach the observer.
The Earth has mass ME and average radius RE. Find an expression for the moment of inertia IE of the Earth on its axis in terms of the given parameters
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