Physics, 08.11.2020 09:10 miguelpoblano5673
A. A lead bullet strikes a wooden block with velocity of 500m/s and bullet falls
dead. Calculate the rise in temperature of bullet assuming that 40% of the heat
produced is used in heating the bullet. [ sp. Heat of lead is 0.03cal/g °C]
Answers: 3
Physics, 21.06.2019 18:00
Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.
Answers: 3
Physics, 22.06.2019 13:40
Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.
Answers: 2
Physics, 22.06.2019 16:30
What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
Answers: 2
A. A lead bullet strikes a wooden block with velocity of 500m/s and bullet falls
dead. Calculate th...
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