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Question1
Two train whistles have an identical frequency of 157 Hz. Train A is motionless in the station and sounds its whistle.
Meanwhile Train B is pulling into the station and sounds its whistle. The conductor of Train B hears 3.70 beats every second.
How fast is Train B moving? The speed of sound is 340. m/s.
Question2
Two small non conducting spheres have a total charge of 91.0.while placed 1.19 apart, the force each exerts on the other is 10.5 and is repulsive. What is the charge on each? What if the force were attractive?
Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
Suppose you are driving in the High Sierras from Mammoth Mountain to the Owens Valley 2038 m below. what would be your approximate final speed
A 8.85 ?C point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.65, Find the tension in the wire, What would the tension by if both charges were negative
You are on an airplane traveling 30° south of due west at 150.0 m/s with respect to the air. The air is moving with a speed 38.0 m/s with respect to the ground due north. What is the heading of the plane with respect to the ground
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
The first two anti-stokes lines in the rotational Raman spectrum of N2 occur at 29709.1 and 29717.1cm^-1. Calculate the bond length of N2 molecule.
A certain automobile engine is performing work at the rate of 28300 W (38 hp) with an efficiency of 23%. At what rate is heat being expelled by the engine
What must be the mass m2 of the hanging block if it is to descend 11.0m in the first 3.00s after the system is released from rest
suppose a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.
A red light of wave length 6.65x10^-7 is an incident beam perpendicular to a surface of glass. n=1.65 for glass. Calculate wavelength of red light in film
How far from the center of the earth must a person be to experience acceleration as the reason of gravity that is one half the acceleration at the surface.
Argon is a monatomic gas whose atomic mass is 39.9 u. The temperature of 9 grams of argon is raised by 75 K under conditions of constant pressure. Assuming that argon is an ideal gas, evaluate how much heat is required? J
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