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The security alarm on a parked car goes off and produces a frequency of 1110 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 88.7 Hz. At what speed are you driving?
The pressure in a vessel containing methane and water at 70°C is 10 atm. Estimate the mole fraction of methane in the liquid
Calculate the amplitude of the voltage pulse produced by collecting a charge equal to that carried by 10^6 electrons on a capacitance of 100 pF
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
Electrons from a heated filament pass through a hole in the cathode. They are then accelerated between the cathode and anode. what direction are the electrons deflected
A 20cm length of 0.35mm diameter nichrome wire is welded into a circular loop. The loop is placed between the poles of an electromagnet, What is the induced current in the loop
The nucleus 11-4 Be undergoes B- decay with a half-life of 13.8 sec. The atomic mass of 11-4 Be is 11.021660 u. What is the total kinetic energy of the decay products
In seawater, a life preserver with a volume of 4.00×10?2m^3 will support a 72.0kg person (average density 980kg/m^3 ), compute the density of the material composing the life preserver
A 3000kg space vehicle, initially at rest, falls vertically from a height of 3100km above the Earth's surface. Determine how much work is done by the force of gravity
A roller coaster cart with a mass of 116 kg is originally moving at 22 m/s at a height of 24 meters above the ground on a frictionless hill , What is the length of the horizontal surface
A solenoid that is 87.0 cm long has a cross-sectional area of 14.0 cm2. Calculate the energy density of the magnetic field inside the solenoid
Years ago, a block of ice with a mass of about 19.0 kg was used daily in a home icebox. The temperature of the ice was 0.0°C when it was delivered. how much heat did a block of ice absorb
A hard steel ball is dropped from rest at postion y = 2h and bounces from a hard surface tilted at an angle phi from horizontal. On impact, Find the horizontal displacment of the ball
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