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An ambulance with a sirenemitting a whine at 1730 Hz overtakes and passes a cyclist pedalinga bike at 2.3 m/s. After being passed, the cyclist hears afrequency of 1718 Hz. How fast is the ambulance moving? (Take the speed of sound in air to be 343 m/s.
Three resistors are connected to a in series with a 19 V ideal battery, What is the current coming out of the battery
Two points are given in polar coordinates by (r,?) = (3.0 m , 35.0°) and (r,?) = (4.0 m, -35.0°), respectively. What is the distance between them
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
Consider two widely separated conducting spheres, 1 and 2, the second having six times the diameter of the first. Find the final charge q1 and q2
An 8m, 200 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and ladder makes a 50.0° angle with the ground. How far up the ladder can an 800 N person climb before the ladde..
Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. how much work does the tension force do on Magnus
Suppose the magnitude of the gravitational force between two spherical objects is 2000 when they are 100 apart. find the magnitude of the gravitational force between the objects
A solid spherical mass M2 = 30 kg and radius 20 cm is concentric with a spherical shell M1 = 60 kg, determine the gravitational force on mass m
A 1.20-m-long metal bar is pulled to the right at a steady 5.9m/sperpendicular to a uniform, 0.790-T magnetic field. Calculate the magnitude of the emf induced in the circuit
A bumper car with mass m1 = 116 kg is moving to the right with a velocity of v1 = 5 m/s. A second bumper car with mass m2 = 96 kg is moving to the left with a velocity of v2 = -3.8 m/s. The two cars have an elastic collision. Suppose the surface is f..
An object in circular motion has its tangential velocity go down at a constant rate from 39.0 m/s to 15.0 m/s in 2.40 seconds. What is the total acceleration
Red laser light of 630 nm is incident upon a diffraction grating. determine the angle from the incident ray of the first diffracted ray
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