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A car approaches you at a constant speed while sounding its horn. You hear a frequency of 86.0 Hz. After the car goes by, you hear a frequency of 79.0 Hz. What is the frequency of the sound emittted by the horn? (The speed of sound in air is 342 m/s.)
A 82.7-kN car is travelling at 73.1 mph when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car
A car traveling at 55 km/h hits a bridge abutment. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has a mass of 39 kg
A satellite has a mass of 6043 kg and is in a circular orbit 4.60 × 105 m above the surface of a planet. The period of the orbit is 2.2 hours. What would be the true weight of the satellite
A small airplane flies with a speed relative to the ground (ground speed) of 219.0 km/h in a direction 20.0 degrees to the east of north. what is the speed of the wind
A particle, p, has a mass of 2 kg and is traveling with a speed of vp-i = 3.1 m/s. The particle scatters elastically from another particle N, What is the magnitude of the momentum of the recoiling N
The exterior walls of a house have a total area of 204 m2 and are at 11.4°C and the surrounding air is at 7.4° C. Find the rate of convective cooling of the walls
How many stereoisomers are possible for CH2Cl2 provided that the central carbon has a square planar geometry
Two atomic clocks are synchronized while on Earth before one is launched (within a GPS satellite) into a medium-altitude Earth orbit. estimate the time difference between the two atomic clocks
What is the mass in kg of the air in a scuba tank that has an internal volume of 0.01 m3 and it is pressurized o that the density of the air in the tank is 240 kg/ m3
How various people can the raft hold before they start getting their feet wet, assuming the average person has a mass of 64? Do not avoid the weight of the logs. Assume the specific gravity of wood is 0.70.
Find the number of revolutions that the wheel turns before it stops(and begins to turn in the opposite direction).
you have deployed drifting buoys in the pacific at 20o south. after the passage of a strong storm you observe your
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