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An ambulance is traveling east at 55.6 m/s. Behind it there is a car traveling along the same direction at 34.5 m/s. The ambulance driver hears his siren at a frequency of 888 Hz.
A) What is the wavelength of the sound of the ambulance's siren if you are standing at the position of the car? The velocity of sound in air is 343 m/s .
B) At what frequency does the driver of the car hear the ambulance's siren?
The space shuttle is in a 400km - high circular orbit. It needs to reach a 700 km -high circular orbit to catch the Hubble Space Telescope for repairs. how much energy is required to boost it to the new orbit
Demonstrate your understanding of how the increases and/or changes in court workloads are impacting the offices that are responsible for court management.
q1. charge a and charge b are 2.5 m apart. charge a is 1.4c and charge b is 2.5c. charge c that is 2.0 c is located
question1two rectangular optically flat glass plates of index of refraction 1.46 are in contact along one end and are
q1. how much would an 80.0 kg person weight a on mars where an acceleration of gravity is 3.93 ms2 and b on earths moon
Suppose you inherit 3.05 mol of gold from your uncle (an eccentric chemist) at a time when this metal is selling for $15.00 per gram. what is this gold worth
Two equally charged spheres of mass 1.0 g are placed 2.0 cm apart. When released, they begin to accelerate at 655m/s^2. What is the magnitude of the charge on each sphere
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter- deep lake. When the sun is 30 degrees above the horizon, how long will the shadow of the mast be on the bottom of the lake?
A 8.22 nC charge is located 1.82 m from a 4.38 nC point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other.
A gasoline engine has a power output of 185kW (about 248hp ). Its thermal efficiency is 28.5%. How much heat is discarded by the engine per second
A 400 g lemming (does anyone remember that old computer game?) waddles horizontally off a small 4.90 m high cliff with a speed of 0.5 ms-1.How far from the base of the cliff will the lemming land? What will be the lemmings speed upon landing.
Fleas have remarkable jumping ability. A 0.55mgflea, jumping straight up, would reach a height of 40cm if there were no air resistance. What is the flea's kinetic energy as it leaves the ground
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