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Consider a conical pendulum that consists of a bob on one end of a string of negligible mass with the other end of the string attached to a point on the ceiling, as shown below. Given the proper push, this pendulum can swing in a circle at a given angle, maintaining the same distance from the ceiling throughout its swing. If the mass of the bob is m, the length of the string is d, and the angle at which it swings is theta, what is the speed v of the mass as it swings? Hint: Find the vertical and inward radial components of the string's tension.
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. How long is each rod
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
at most how many bright fringes can be formed on each side of the central bright fringe not counting the central bright
show an example of the use of steam tables and mollier charts. use the following information to show how the answer can
Find the speed of sound in a thin rod of cast iron, which has a sheer modulus of 4.5 1010 Pa and a density of 7.30 103 kg/m3
A ray of light incident upon a mirror makes an angle of 37degrees with the mirror. What is the angle between the incident rayand the reflected ray
A 61 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11m , and falls a total of 32 m. Calculate the maximum acceleration she experiences
The starter motor of a car engine draws a current of 180A from the battery. How far does an electron travel along the wire while the starter motor is on
An electric-generator turbine spins at 3400 rpm. Frictionis so small that it takes the turbine 19.0 min to coast toa stop. How many revolutions does it make while stopping
At high altitudes, water boils at a temperature lower than 100.0° C due to the lower air pressure. What activation energy does this rule imply for the chemical reactions
A mass-spring system with 0.250kg undergoes simple harmonic motion with period 0.52 seconds. When an additional mass (delta M) is added, the period increases by 21%. A) Find delta M. Express your answer to two significant figures and include the appr..
For a 120-V rms 60-Hz voltage, an rms current of 70 mA passing through the human body for 1.0?s could be lethal. What must be the impedance of the body for this to occur
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