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Two automobiles are equipped with the same single frequency horn. When one is at rest and the other is moving toward the first at 15 m/s the driver at rest hears a beat frequency of 5.5 Hz. What is the frequency the horns emit?
(Hz)
A box has a partition with 10% of its volume one side. The larger section of the box contains 500 Ar atoms and the smaller 100He atoms. A small hole is put into the partition. At equilibrium, what is the mean number of atoms of each type?
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 2.00 104 Pa, Find the speed of flow in the upper section
A particle's acceleration is described by the function ax =(10-t)m/s^2, where t is in s. At what time is the velocity again zero
a 5 litre pressure vessel contains 200g of propane. using the peng robinson eos calculate the pressure in the vessel
One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. Determine the final speed of the two-object system
In a head-on collision, a car stops in 0.15s from a speed of 19m/s. What force is applied to the driver by his seat belt during that fraction of a second
At the bottom of the slope, the path levels out and become horizontal, the snow becomes less icy, and the skier begins to slow down, coming to rest in a distance of 160.00 m along the horizontal path.
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. At what height from the ground will the two objects first meet
A generator delivers an AC voltage of the form ?v = (90 V) sin (95?t) to a capacitor. The maximum current in the circuit is 1.50 A. Find the following. (a) rms voltage of the generator V (b) frequency of the generator Hz (c) rms current A (d) reactan..
Suppose 12.5 g of oxygen (O2, 32.0 g/mol) is heated at constant atmospheric pressure from 19.0°C to 100°C. How many moles of oxygen are present
A meteorologist tracks the movement of a thunderstorm with Doppler radar, What is the direction of the average velocity of the storm
A series LRC circuit consists of a 12.0-mH inductor, a 15.0-µF capacitor, a resistor, and a 110-V (rms) ac voltage source. what is its impedance at a frequency twice the resonance frequency
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