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Diagnostic ultrasound of frequency 3.03 MHz is used to examine tumors in soft tissue. (a) What is the wavelength in air of such a sound wave? (b) If the speed of sound in tissue is 1340 m/s, what is the wavelength of this wave in tissue? (Take the speed of sound in air to be 343 m/s.)
One method for determining the amount of corn in early Native American diets is the stable isotope ratio analysis (SIRA) technique. What is the diameter of the semicircle
A gas mixture contains 2.50 mol of O2 and 3.00 mol of Ar. What is the molar specific heat at constant pressure for this mixture
A car moves with a constant acceleration of 2.1 m/s2. At a time of 1 s, it is 170 m beyond a mile marker, Find the car's position after the mile marker at time 5 s
q1. a 2.90-m-long 300 kg steel beam extends horizontally from the point where it has been bolted to the framework of a
Suppose your lab partner has a height L of 170 cm (5 ft, 7 in) and a weight w of 680 N (153 lb). find the distance of your lab partner's center of gravity from the left end of the board
A rope is attached to a car and pulled with a 75 N force at an angle of 15 degrees NE. What is the net force and what is its direction
The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12 cm. Evaluate the initial speed of the bullet. V = 530 m/s
The flywheel of an automobile engine is a solid disk with a mass of 8.5 kg and a radius of 23 cm and is rotating at 3850 rpm. to what height would the flywheel be lifted
question1a weight lifter pulls down on a bar associated to some weights via a pulley system. he rises in the air. a
q1. two speakers 6.00 m apart are driven by the same audio oscillator so that each one produces a sound consisting of
If the maximum acceleration the vehicle's brakes are capable of is -5 m/s2, what is the maximum reaction time of the motorist that would allow her or him to avoid hitting the deer.
Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 23.0m/s as it leaves the hose nozzle. Find the angle of elevation of the hose
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