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A uniform disk of radius r = 120 mm is welded at its center to two elastic rods of equal length with fixed ends at A and B. Knowing that the disk rotates through an 8° angle when a 500-mN . m couple is applied to the disk and that it oscillates with a period of 1.3 s when the couple is removed, determine
(a) the mass of the disk,
(b) the period of vibration if one of the rods is removed.
An electron initially at rest moves from one plate of a capacitor to another, through a potential di?erence of 2476 V, Find the speed with which the electron strikes the positive plate
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
A steel wire with mass 20.7 g and length 1.11 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Calculate the linear density of the string. Compute the wavelength of the string's vibration.
A typical neutron star might have a mass equal to that of the sun however a radius of only 10.0 km. What is the gravitational acceleration at the surface of such a star?
Two capacitors, one 7.0 μF the other 14 μF, are connected in series across a 15 Volt battery. Estimate the charge stored on 7.0 μF capacitor
Compute the linear momentum and angular momentum of a Frisbee of mass 0.159 kg if it has a linear speed of1.85 m/s and an angular velocity of46.0 rad/s. Treat the Frisbee as a uniformdisk of radius 12.5 cm.
A wire of length L = 15 is bent into a semi circle . If the total charge on the wire is -45nC, determine the electric field at the center point of the semicirlce.
asssume that in a particular vacuum tube the potential of the anode is 340 V higher than that of the cathode. If an electron leaves the surface of the cathode with zero initial speed, what is its speed when it strikes the anode.
Two 95.0W (120 V) lightbulbs are wired in series, then the combination is connected to a 120V supply. How much power is dissipated by each bulb
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 3.60 m/s. Ignore frictional losses. What is the height of the hill?
A string vibrates in five segments to a frequency of 460Hz. (a) what is its fundamental frequency? (b) What frequency will cause it to vibrate in three segments.
Water drips from a shower head (the sprayer at the top of the shower) and falls onto the floor2.2m below. The droplets are falling at regular intervals (equal amounts of time between drops), with the first drop hitting the floor at the instant that t..
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