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An ambulance is generating a siren sound at a frequency of 1,800 Hz. The velocity of sound is 335.0 m/s. The observer is traveling at a velocity of 25.00 m/s away from the ambulance and the ambulance is traveling at a velocity of 28.00 m/s away from the observer. What is the frequency of the siren perceived by the observer?
questionin everyday life we know that something described as white hot is hotter than something described as red hot.
1.you are holding a 6-kg dumbbell straight out at arms length. assuming your arm is 0.70 m long what torque is the
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
A tire 0.300 m in radius rotates at a constant rate of 210 rev/min. What is the acceleration of the stone
Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.7 mW. Find the peak magnetic field strengt
A jet airplane is in level flight. The mass of the airplane is m = 8950 kg. What is the magnitude of the lift force acting on the plane
Electric charge Q has been spread uniformly over a circular arc of radius R and central angle 40 degrees. What is the potential at point P, center of curvature of the arc.
A 1,216-kg car drives through a turn with radius 42 m. The coefficient of static friction is 0.9 and the coefficient of kinetic friction is 0.52. find the maximum speed (constant) at which the car can negotiate the turn
a vehicle covers 600m on a compass bearing of 47 degrees,then 500m bearing 128 degrees; Determine the resultant displacement of the vehicle
An airplane pulls a 25 kg banner on a cable as depicted in the figure below. What is the drag force exerted on the banner by the air
A man wishes to vacuum his car with a canister vacuum cleaner marked 550 W at 120 V. If the resistance of each of the two conductors of the extension cord is 0.900 Ohm's, what is the actual power delivered to the cleaner
q. a certain toaster has a heating element made of nichrome resistance wire. when the toaster is first connected to a
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