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In astronomy, a parsec ( pc) is dened as the distance at which an object with a size of 1 astro- nomical unit (AU) would subtend an angle of 1 arc-second. Find the conversion factor between parsecs and astronomical units.
What plate separation is required for a parallel plate.
An iron tower in is 399 meters tall on a cold day (T = -6.7 degrees Celsius). What is its height of the tower on a hot day while the temperature is 31.5 degrees Celsius.
A 170 g ball attached to a spring with spring constant 2.1 N/m oscillates horizontally on a frictionless table. Its velocity is 22 cm/s when xo= 4.3 cm. What is the ball's position when the acceleration is maximum
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83, How much is the force of friction on the dresser
You are given a spherical mirror and wish to determine its properties. You place an object on its axis, Find the mirror\'s focal length
A simple harmonic oscillator consists of a block of mass 2.2kg attached to a spring of spring constant 26N/m. When t = 1.60 s, the position and velocity of the block are x = 0.128m and v = 3.170 m/s. (a) What is the amplitude of the oscillations? ..
Styrofoam has a density of 300 kg/m^3. What is the maximum mass that can hang without sinking from a 40cm diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
A beam of protons at an accelerator creates a current of 120 mu/A. how many protons strike the target in 30.0 s
What voltage must be applied to the 5.00 µF capacitor of a heart defibrillator to store 600 J in it, Find the amount of stored charge
A parallel plate capacitor with a capacitance C= 200x10^-12 consists of two copper plates, Calculate the potential(voltage) at a point exactly halfway between the plates
An unstable particle called the pion has a mean lifetimeof 25 ns in its own restframe. What is the mean lifetime of the pions as measured in thelaboratory frame
A racecar starts from rest and accelerates to 100 km/hr halfway around a circular track of a radius 50 m. What is the magnitude of the acceleration of the car
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