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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?
A massless spring of force constant 19 N/m hangs vertically. A body of mass 0.20-kg is attached to its free end and then released. find the amplitude of the resulting motion
A lens for a 35mm- camera has a focal length given by = 51mm, What is the magnification of the image on the film
After driving around and undergoing a displacement of ?rx = 27.7 km and ?ry = -14.5 km, a driver finds herself at position r2x = -31.9 km and r2y = 15.7 km. What were the components of the driver\'s initial position vector, r1x and r1y, in kilometers..
Suppose you have two equal mass objects both on a gentle incline. One is a glider on an air track while the other is a ball on a straight slope. Explain what type of energy both objects have
A major-league pitcher can throw a baseball in excess of 48.7m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 15 m away from the point of free.
The wavelength of the laser beam used in a compact disc player is 483 nm. Estimate the spacing between the slits of the grating
Three metal fishing weights, each with a mass of1.00x102g and at a temperature of 100.0oC,are placed in 1.00x102g of water 35.0oC. The final temperature of the mixture is 45.0oC. What is the specific heat of the metal in the weights?
How many signals could fit into 1 MHz of bandwidth if each signal required 100 kHz of bandwidth and the separation between adjacent channels was 10 kHz
Sirius has a luminosity of 8.4 * 10^27 Watts and a mass of 2.1 times the mass of the Sun, How much hydrogen does Sirius convert into helium each second
A 2.00 cm high object is placed 3.0 cm in front of a concave mirror. If the image is 6.0 cm high and virtual, what is the focal length of the mirror
a sinusoidal wave of amplitude a1 approaches a and travels through a region of thenbspstring in which the mass per unit
Particles of charge Q1 = +65 µC, Q2 = +43 µC, and Q3 = -80 µC are placed in a line. The center one, Q2, is 0.35 m from each of the others. find the net force on each charge due to the other two
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