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A 6.5 ´ 102 -g mass is attached to the end of a 2.0 m long string and twirled in a circle that forms a vertical plane.
(a) What is the minimum Period required to keep the mass moving in this circle?
(b) What is the minimun Tension in the string at the minimum period?
(c) At what location on the circle's path does the maximum Tension occur.
(c) Calculate the maximum Tension in the string at this location when being twirled at the minimum period.
A proton is initially at rest at a point where the potential is 515V. Sometime later the proton is at a point where the potential is 190V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy.
An air conditioner connected to a 120 V rms ac line is equivalent to a 14.9 ? resistance and a 1.39 ? inductive reactance in series. calculate the impedance of the air conditioner
on a frictionless air track a 0.125 glider moving at 1.05 to the right collides with and sticks to a stationary 0.235
an elastic cord has an unstreched length of 8.1 m and a cross-section of 2 cm2. if the youngs modulus of the material
The current density inside a long, solid, cylindrical wire of radius a is in the direction of the central axis and its magnitude varies with radial distance r from the axis according to J = br2, where b is a positive constant.
A curve with a 140 radius on a level road is banked at the correct angle for a speed of 20 . If an automobile rounds this curve at 30 , what is the minimum coefficient of static friction between tires and road needed to prevent skidding.
In the days before compact discs and MP3 players (ancient history!), music was recorded in scratches in the surface of vinyl-coated disks called records. Find the centripetal acceleration of a point on the edge of the record
A circuit element is subjected to a sinusoidal AC voltage with frequency of 150 Hz and a peak voltage of Vp = 24.0 V. What are the values of the maximum current?
A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal acceleration. In what direction should the proton move?
The Lake Gaston pipeline conveys raw water through a 60-inch diameter steel pipe, which has a roughness of 0.0025 ft. If the flow rate is 65 MGD, what is the head loss for the 75 miles? Assume the water has a kinematic viscosity of 1.217 x 10-5 ft..
A barber's chair with a person in it weighs 2100N. The output plunger of a hydraulic system begins to lift the chair when the barber's foot applies a force of 55N to the input piston. Neglect any height difference between the plunger and the pisto..
Given: G = 6.67259 × 10^?11 Nm2/kg2 Voyagers 1 and 2 surveyed the surface of Jupiter's moon Io, Estimate the speed with which the liquid sulfur left the volcano
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