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An ambulance siren is the source of sound emitted with a frequency of 1600 Hz. The ambulance is driving toward the base of a large cli at 95 km/h. What is the frequency of the reflected sound wave heard at the ambulance?
An electron is accelerated by a constant electric field of magnitude 325 N/C. (a) Find the acceleration of the electron. m/s2 (b) Use the equations of motion with constant acceleration to find the electron's speed after 9.00 10-9 s, assuming it st..
A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. What was the frequency of the note before he loosened the string
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
You then maintain a constant speed of 65.0 mph. You pass the patrol car 16 seconds after you at first applied the brakes and are relieved that he doesn't pull out after you. How far away was the highway patrol car when you first saw it.
Illustrate what is the magnitude of the apparent weight of a 70 astronaut 3600 from the center of the Earth's Moon in a space vehicle moving at constant velocity?
make use of the force equation of equilibrium with torques to compute around the second pivot pt, fine the women's position when the beam is about to tip.
A spaceship is approaching a space station at a speed of 2.55 multiply.gif 105 m/s. What is the frequency of the beacon observed on the spaceship
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, Find the acceleration of the proton
Two 1.90-cm-diameter disks spaced 2.10mmapart form a parallel-plate capacitor. The electric field between the disks is 5.10×105V/m, What was the electron's speed as it left the negative plate
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east, How far east will the plane travel in 1 hour
Two point charges q1 = 3.40 nC and q2 = -5.50 nC are 0.100m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2. Take an electric potential to be zero at infinity.
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet
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