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How long does an organ pipe have to be if it is closed at one end, open at the other, and has a fundamental frequency of 107 Hz? Assume that the speed of sound in air is 343 m/s. Your answer should be given in centimeters to the nearest centimeter.
A 1.12-kg aluminum pot contains 2.25 L of water. Both pot and water are initially at 19.1 °C. How much heat must flow into the pot and the water to bring their temperature up to 95.0 °C
A 0.14 kg sphere hangs on a string from the ceiling of a car that is accelerating horizontally at a constant rate. What is the magnitude of the net force on the sphere
questionrefrigerant is flowing while a frac34 inch o.d. copper tube under conditions such that its mixed temperature is
A step-down transformer produces a voltage of 7.0V across the secondary coil when the voltage across the primary coil is 120V. What voltage appears across the primary coil of this transformer if 120V is applied to the secondary coil?
A plastic rod is rubbed against a wool shirt, How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10?19 C
An airplane propeller is 2.05m in length (from tip to tip) with mass 122 kg and is rotating at 2200 rpm (rev/min) about an axis through its center. You can model the propeller as a slender rod.
A 20-kg block and a 10-kg ball are hung from the ceiling through a pulley as shown below, calculate the acceleration of the ball and the block
A 20 000 N truck is acted upon by the force that decreases its speed from 10.00 m/s to 5.0 m/s in 5.0 sec. What is the magnitude of force.
Suppose 60kW is to be transmitted over two 0.150? lines, Estimate how much power is saved if the voltage is stepped up from 200V to 2000V
a spherical gaussian surface is drawn inside a spherical object as shown. upon inspection no net charge exists within
The velocity of an airplane with respect to the ground is 2.00 x 102 m/s at an angle of 30.0 degrees NORTH of EAST. What is the velocity of the air with respect to the ground
A 12.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 3.99 m/s in 1.02..
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