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Find the minimum diameter of an l = 18.9 m long brass wire that will stretch no more than 9.38 mm when a mass of 312 kg is hung on the lower end. (Hint: The Young's modulus of brass is 91.0 GPa.)
A rifle with a weight of 40 N fires a 3.5 g bullet with a speed of 240 m/s. find the recoil speed of the man and rifle
A speedboat moves on a lake with initial velocity vector V1x= 9.27m/s and V1y= -2.83m/s, What are the components of the speedboat's final velocity
What is the tension in the rope connecting the two boxes? What is the tension in the rope connecting the first box to the ramp?
A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, What is the speed of the third piece
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
A 0.223 kg ball is thrown straight up from 1.81 m above the ground. Its initial vertical speed is 8.40 m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time.
q1. a discussion of why the ideal gas law is expected to fail at low temperatures and how its failure may affect your
A 15kg crate is moved along a horizontal floor by pulling on it with a rope that makes a 30 degree angle with the horizontal. The tension in the rope is 200N and the crate slides a distance of 10m.
Electrons are ejected with a maximum velocity of 5.1 x 105 m/s from a metal when illuminated by photons with a wavelength of 440 nm. calculate The energy of the incident photons
Find the forces that act on each of the three charges. a) q = -1.0 µC in vector form b) q= 3 µC in vector form b) q =5 µC in vector.
Three 18-cm-long rods form an equilateral triangle. find the electric field strength at the center of the triangle
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it accelerates from rest and then back to rest at 1.22 m/s2. How long does it take to make the nonstop 190 m run, starting and ending at rest
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