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Q1. Two identical 30 {rm g} particles each carry 3.0 {rm mu C} of charge. One is held fixed, and the other is placed 1.0 {rm mm} away and released. Find out the speed of the moving charge when it's 1.0 {rm cm} from fixed charge.
Q2. An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find out the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C.
Two lightweight rods d = 30 cm are mounted perpendicular to an axle and at 180° to each other. What is the component of the total angular momentum along the axle
A horizontal 799-N merry-go-round is a solid disk of radius 1.45 m, started from rest by a constant horizontal force of 49.9 N applied tangentially to the edge of the disk
One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that vibrates at a frequency 125Hz, What is the speed of a transverse wave on the rope
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
A group of students determined that the following points were upon the best fit line for a graph of W2 vs. Determine the total mass of the system
Consider an ideal gas at 27 degree C and 1 atm. To get some idea how close these molecules are to each other, What is the length of an edge of each cube if adgacent cubes touch but not overlap
The escape velocity of a bullet from the surface of planet Y is 1951 m/s. Calculate the escape velocity from the surface of planet X
A mass-spring system has k = 56.4N/m and m = 0.43kg. Find the period of its simple harmonic motion
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 9.00×10?3m/s2 less than that at sea level
An electric dipole is formed from +/-4.0 nC point charges spaced 3mm apart. The dipole is cantered at the origin, oriented along the y-axis. What is an electric field strength at point (x,y) = ( 6.0 cm, 0 cm)
Three balls with masses of 6 g at (1,9), 1 g at (7,6), and 7 g at (5,1), respectively, are connected by massless rods. What is the acceleration of the center of mass
what is the speed of an electron with a de Broglie wavelength of .29nm, What is the speed of a proton with a de Broglie wavelength of .29nm
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