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A wave pulse travels along a string at a speed of 160 cm/s. Note that parts a - d are independent and refer to changes made to the original string.
a) Find what will be the speed if the string tension is doubled?
b) Find what will be the speed if the string's mass is quadrupled (but its length is unchanged)?
c) Find what will be the speed if the string's length is quadrupled (but its mass is unchanged)?
d) Find what will be the speed if the string's mass and length are both quadrupled?
A flat circular coil with 110 turns, a radius of 3.80 × 10-2 m, and a resistance of 0.340 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil, Find the induced current in the coil
Wax An air-filled parallel-plate capacitor has acapacitance of 1.4 pF. The separation ofthe plates is doubled and wax is inserted between them. The new capacitance is 2.8 pF. Find the dielectric constant of the wax.
In an electron-beam heater, electrons at rest near a tungsten filament are accelerated toward a metal target at a high electrostatic potential. find the potential difference between the target and the filament
Several identical capacitors are connected along the edges of a square grid, so that along each edge there is exactly one capacitor. evaluate the net charge deposited from the battery
An automobile tire has a radius of 0.325 m, and its center moves forward with a linear speed of v = 24.8 m/s. Determine the angular speed of the wheel
An object of mass 5kg has an initial velocity of 10m/s, if this object has moved a distance of 40m and maintains a final velocity of 20m/s. What is the external force encountered by this object
An object of mass m1 = 4.00 kg is tied to an object of mass m2 = 3.90 kg with String 1 of length = 0.500 m. What is the tension in String 1 at this instant
Two long parallel wires carry currents of 3.85 A and 4.31 A. The magnitude of the force per unit lengh acting on each wire is 3.77 Ã- 10-5 N/m
a steel rod is used to transfer heat from a chamber at 300 k to a chamber at 250 k. which of the following changes in
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of itsengines is 3.90 x 105 N. In being launched from rest itmoves through a distance of 72.8 m and has a kinetic energy of ..
the stanford linear accelerator accelerated a beam consisting of 1.2 1014 electrons per second through a potential
The maximum angular magnification of a magnifying glass is 12.0 when a person uses it who has a near point that is 25.0 cm from his eyes. Obtain the focal length of the objective
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