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Two steel guitar strings have the equal length. String A has a diameter of 0.60 millimeter and is under 450 Newton of tension. String B has a diameter of 1.0 millimeter and is under a tension of 830 Newton.
Determine what the ratio of the wave speeds, vA/vB, in these two strings.
A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just before hitting the ground. What is the average frictional force that acts on the sliding bear
The pilot of an aircraft wishes to fly due west in a 33.10 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 190 km/h what must its speed relative to the ground be.
In tae-kwon-do, a hand is slammed down onto a target at a speed of13m/s and comes to a stop during the4.4ms collision. find the magnitude of the impulse on the hand from the target
A wire running parallel to the x-axis has a current of 3.40A in the +x direction. There is a uniform magnetic field of B=0.003 i + 0.004 j + 0.002 k Tesla. Calculate the y-component of the magnetic force acting on a piece of wire of length L = 18.0cm..
(a) How much does a 70.0 kg person weigh on the Earth? (b) How much would she weigh on the Moon (gmoon = 0.166g)? (c) How much would she weigh on a neutron star where gstar = 1.43×1011g?
A sledge loaded with bricks has a total mass of 18.1 kg and is pulled at constant speed by a rope. what is the energy lost due to friction
An alpha particle(q = +3.20×10−19 C) moves at avelocity of 2.45×104 m/s inthe positive x direction through a magnetic field of 0.0765 T that points in the negative zdirection. What are (a) the magnitude and (b) the direction of the magnetic force on ..
Two forces are applied to a tree stump to pull it out of the ground. Force Fa has a magnitude of 2240 newtons and points 34 degrees south east, while Force Fb has a magnitude of 3160 newtons and points due south.
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 38 m/s (around 90 mi/h) in a time of 7.5 s. The mass of the car and riders is 3600 kg. Find the average net force exerted on th..
an electromagnetic wave strikes a 1.91-cm2 section of wall perpendicularly. the rms value of the waves magnetic field
The wavelength of the laser beam used in a compact disc player is 549 nm. Estimate the spacing between the slits of the grating
A simple at woods machine uses two masses m1 and m2. Starting from rest, the speed of the two masses is 9.6 m/s at the end of 6.9 sec. Determine the value of the lighter mass
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