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A wire of mass 1 g and length 46 cm is stretched with a tension of 500 N. It is then placed near the open end of the tube shown in figure and stroked with a violin bow so that it oscillates at its fundamental frequency. The water level in the tube is then lowered until a resonance is obtained, which occurs at 18 cm below the top of the tube. Find the speed of sound in air. Answer in units of m/s.
Consider the collision between two hockey pucks in the figure below. They do not stick together. What is the final velocity of the other puck
A hollow cubical box, 0.28 meter on a side, with walls of negligible thickness floats with 30 percent of its volume submerged. Find what mass of water can be added to the box before it sinks
1 mole of cu at temp. 0 celsius is placed in thermal contact with a second mole of cu at 100 celsius. pressure in the
question an electron with a speed of 2.0 x 106 ms moves into a uniform electric field of 500 nc that is parallel to the
A proton moves at a speed of 1155 m/s in a direction perpendicular to amagnetic field with a magnitude of 0.74 T. What is the magnitude of the magnetic force on the proton?
A student at a rock concert has a seat close to the speaker system, where the average sound intensity corresponds to a sound level of 116 dB. By what factor does that sound intensity exceed the 1.5- Hours/day intensity limits from the graph?
A 10000 kg train car A traveling at a speed of 24 m/s strikes an identical car B initially at rest. calculate the amount of the initial kinetic energy is transformed into thermal or other forms of energy
A solid piece of lead has a mass of 29.18 g and a volume of 2.60 cm3. From these data, calculate the density of lead
a 150g block on a frictionless table is firmly attached to one end of a spring with k 30nm . the other end of the
Using Newton's laws find the normal force on the object. Determine the force of kinetic friction on the object
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
How much heat in joules is needed to raise the temperature of 9.0 L of water from 0C to 94.0C? (Hint: Recall the original definition of the liter.)------J
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