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In exploring the Doppler effect, we learned that sound from approaching or receding sources can seem higher or lower in pitch. When the engineer of a train blows the whistle, does he or she hear any apparent change in pitch when the train is moving? Why or why not? Explain your answers.
plan a free-body diagram for the charge.
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.502, How much force is needed to keep the book moving at constant speed once it begins moving
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300K, What is the final temperature of the gas
The flywheel in a car is a solid cylinder with a mass of 100 kg, a radius of 12 cm, and a length of 5.0 cm. What is the kinetic energy of the cylinder
A charge of +378 C is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +1.8 C is moved from one corner of the square to any other empty corner?
question1a particle is uncharged and is thrown perpendicularly upward from ground level with a speed of 23.7 ms. as a
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
Manufacturers of headache remedies routinely claim that their own brands are more potent pain relievers than the competing brands. Find the number of molecules of pain reliever
Water at a pressure of 3.2 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 5.6 cm in diameter. Calculate the water pressure in such a pipe on the top floor
Find out distance the two drivers travel
the position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t], velocity and acceleration of the cart
In a movie, a person is supposed to jump with a motorcycle from the roof of one skyscraper to another one. what minimum initial speed would she need to make the jump
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