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You sing into a well and find that the well resonates at frequencies of 231 Hz and 273 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode
The largest constant magnetic field achieved in the laboratoryis about 40 T. What is the magnetic energy density due to this field
A spring oscillator is designed with a mass of 0.130 kg. It operates while immersed in a damping fluid, Find the required damping constant for the system
A cat jumps off a piano that is 1.3 meters high. How far from the edge of the piano does the cat strikes the floor
To kick a football, the kicker rotates his leg about the hip joint. If the velocity of the the kickers shoe is 30.3 m / s and the hip joint is 1.24 m from the tip of the shoe, what is the shoe tip\'
A jet airplane is in level flight. The mass of the airplane is m = 8950 kg. What is the magnitude of the lift force acting on the plane
a 15kg block is accelerated at 2.4m/s^2 up a frictionless plane inclined at 5 degrees to the horizontal, wth the speed increasing from 10m/s to 35m/s. what is the change in the blocks mechanical ene
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.0 m/s. find the force he exerts on the ball to give it this upward speed
A steel wire with mass 29.7 g and length 1.52 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Compute the linear density of the string
A 4 kg block rest against one end of a horizontal spring which is compressed by 20 cm. Calculate the constant of kinetic friction Mk between the block and the table
A sound wave from a police siren has an intensity of 103.1 W/m2 at a certain point; find the intensity level of the sound wave due to the ambulance?
A 300-kg elevator is raised with a constant speed through a vertical distance of 100 m in two minutes. What is the useful output power of the hoist
An 85 kg linebacker is running at 8 m/s directly toward the sideline of a football field. Determine their common speed and direction immediately after they collide
A penny sits 20 cm from the axis on an old record, which is spinning at 45 rpm. find the coefficient of friction between the penny and the record
flash decides to make a capacitor at homes. Flash takes two thin, flat, rectangular aluminum plates measuring 35 cmby 50 cm. find the capacitance of flash's creation
A very long, thin straight line of charge has a constant charge density of 20 pC/cm. How far does the electron go before it comes back
The International Space Station orbits at a distance of 355 km above the surface of the Earth. What is the gravitational acceleration it experiences
A solid cylindrical disk has a radius of 0.45 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 159-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
A piano tuner hears one beat every 3.1 seconds when trying to adjust two strings, one of which is sounding 440 Hz, How far off in frequency is the other string
If the plane does 2.00 x 105 J of work to tow the glider 155 m and the tension in the tow rope is 2460 N , what is the angle between the tow rope and the horizontal
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Estimate the length of the lake
A +30mc charge is placed on a metallic sphere of 1.0cm radius. The sphere is surrounded by a spherical thick metallic shell, calculate the electric potential of each of the two conductors
Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary, What is the linear speed, v, of the yo-yo after it has dropped through a height 0.50hm
An experimental airplane is flying northwest from Nashville, at an altitude of 18,000 ft. Determine the lift