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A string 2.0 m long has a mass of 2.4 x 10-2 kg. When fixed at both ends, it vibrates with a fundamental frequency 150 Hz. What is the speed of the wave on this wire? What is the frequency of its third harmonic?
A 1.5 kg copper block is given an initial speed of 3 m/s on a rough horizontal surface. Because of friction, the block finally comes to test. If the block absorbs 85% of its kinetic energy, calculate its increase in temperature.
A thin copper rod 1 m long has a mass of 50 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T.
a thin, uniform bar of length D = 1.28 m and mass M = 0.67 kg pivoted at the top. find the speed of the particle before impact
A jet transport has a weight of 2.43 x 106 N and is at rest on the runway. The two rear wheels are 16.0 m behind the front wheel, and the plane's center of gravity is 12.4 m behind the front wheel. Determine the normal force exerted by the ground on ..
q1. tarzan m 75 kg tries to cross a river by swinging from an 11.0 m long vine. his speed at the bottom of the swing
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.17 mA, How much energy does the battery deliver to the calculator circuit
Using a 677-nm wavelength laser, you form the diffraction pattern of a 0.111-mm wide slit on a screen. How far is the screen located from the slit
A 23 kg box slides 4.0 m down the frictionless ramp shown that is raised 30 degress from the ground , What is the maximum compression of the spring
A thin spherical shell rolls down an incline without slipping. what is the angle the incline makes with the horizontal
An object is sliding on a horizontal surface. The coefficient of kinetic friction between the object and the surface is 0.250. how far will the object travel before it stops
A 100 N force has a horizontal component of 60 N and a vertical component of 80 N. What is the cart's final velocity
In the figure a small, nonconducting ball of mass m = 1.0 mg and charge q = 1.7 x 10-8 C, calculate the surface charge density of the sheet
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