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A car horn produces a sound with a frequency of 400 Hz. The horn is sounded while the car is moving down the street in the same direction as a bicycle which is ahead of the car. The bicyclist is moving down the street with 1/4.29 the speed of the car and hears a frequency of 432 Hertz. Determine the speed of the car (in m/s). The speed of the sound is 341 m/s.
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 10 centimeter in diameter and 60 centimeter in length. Find the total length of wire you will need to meet these specifications
a magnifying glass creates a virtual image of the observed object. explain how it is possible that humans can see the
A 601N athlete standing on one foot on a very smooth gym floor lifts his body by pivoting his foot upward through a 30.0? angle, What is the tension in the Achilles tendon
A long string of tension T and mass density ÃŽ · is attached to a small sphere of mass m. What is the displacement of the string on the right side of the mass, yt(x,t)
consider an electron in the ground state of the hydrogen atom separated from the proton by a distance of 0.0529 nm.a
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
Saturn makes one complete orbit of the Sun every 29.4 years. Calculate the radius of the orbit of Saturn
What is the magnitude of the force that each sphere experiences, and is the force attractive or repulsive?(b) The spheres are brought into contact and then separated to adistance of 2.10 cm. Determine themagnitude of the force that each sphere now ..
What is magnitude of the breaking force
A resistor is connected across the terminals of a 9 V battery, which delivers 1.27E+5 J of energy to the resistor in 8.00 hours
You and a friend are studying late at night. There are three 150 W light bulbs and a radio with an internal resistance of 79.0, How much electrical power are you using
A helicopter rises vertically with a constant upward acceleration of 0.38 m/s^2 . As it passes an altitude of 20m , a wrench slips out the door. How soon does the wrench hit the ground? At what speed does the wrench hit the ground?
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