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An airplane has an air speed of 125 mph and an apparent heading due south (the nose of the plane is pointed south). A 25 mph wind blows from east to west. Find the ground speed of the airplane and its heading relative to the earth (specify whether angle is measured east or west from south)?
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
In a simple model of the hydrogen atom, theelectron revolves in a circular orbit around the proton with aspeed of 1.1 x 10 6 m/s. What is the radius of the electrons orbit
q1. a crate of 31.9- tools rests on a horizontal floor. you exert a gradually increasing horizontal push on it and
A car initially traveling at 33.1 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied. How many revolutions does each tire make before the car comes to a stop
A pendulum consists of a mass m = 0.120 kg hangingfrom a flexible string of length L. Find the oscillation frequency of the pendulum
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube. what is the energy of the electron in electron volts
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
Two parallel plates, each of area 6.52 cm2, are separated by 3.00 mm. The space between the plates is filled with air. Calculate the magnitude of charge stored on each plate
Some asteroid named "Briggie" has been discovered revolving around the Sun on a circular orbit with a period of 3.90 years. What is the radius of Briggie's orbit
A gas initially occupying a volume V undergoes a sudden explosion, causing its volume to triple to 3V. Assuming that the pressure of the environment (atmospheric pressure po) remains constant,
an electric field of 210000 nc points due west at a certain spot. what is the magnitude of the force that acts on a
the current in an rl circuit builds up to one-third of its steady-state value in 3.80 s. find the inductive time
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