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A 120 cm length of string has a mass of 2.50 g. It is stretched with a tension of 7.00 N between fixed supports.
(a) what is the wave speed for this string?
(b) what is the lowest resonant frequency of this string?
A log floats in a river with 1/5 of its volume above the water. Density of water is 1000 kg/m, how much of the volume is now above the water
An idealized voltmeter is connected across the terminals of a 16.5-V battery, and a 79.5-?appliance is also connected across its terminals. How much power is being dissipated by the appliance
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
A point charge q1=+2.40?C is held stationary at the origin. A second point charge q2=-4.30? C moves from the point x= 0.150 m , y= 0m
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
Must show all work and calculations!!!! A primitive yo-yo is made by wrapping a string several times around a solid cylinder with m=200g and r=10cm. Find the tension in the string and the acceleration of the cylinder
A spring with spring constant 40N/m is attached to the ceiling, and a 5.5-cm-diameter, 1.5kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
A coil has a DC resistance of 90 ? and animpedance of 200 ? at a frequency of 1.5 kHz. What is the inductance of the coil
A 1200 crate slides 15 down a ramp that makes an angle of 30 with the horizontal. how much thermal energy is created
While a person is walking, his arms swing through approximately a 45.0^\circ angle in 0.520s. What is the acceleration of a 1.60 gram drop of blood in the fingertips at the bottom of the swing
a child drops a small stone into a deep well the sound of the stone striking the water is hear 1.5 seconds after the
A copper laboratory tank has a diameter of 0.48 m at 20degree celcius. what would be the new diameter if the tank is filled with 80degree celcius alcohol.
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