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Question: In an experiment in the testing laboratory, a specimen 20 mm in diameter and 250 mm long reached the elastic limit under a tensile load of 120 kN and failed under a load of 175 kN. The length of the bar at its elastic limit was 251.2 mm, and at failure was 333.8 mm. Compute the stress at the elastic limit, the ultimate tensile stress, and the strain for the elastic limit.
If you twirl a small 7.0-g wooden ball in a circle at 4.0 revolutions per second on a light 10-cm string, approximately how many units of angular momentum does it have
Coil 1 has L1 = 47 mH and N1 = 104 turns. Coil 2 has L2 = 68 mH and N2 = 215 turns. what mutually induced emf appears in that coil
a 3.4 kg mass attached to a spring is displaced 6.2 cm from the equilibrium position. it is released and then
A square metal sheet 3.3 cm on a side and of negligible thickness is attached to a balance and inserted into a container of fluid. What is the surface tension of the fluid
The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to25 rad/s in 2.4 sec. Find through what angle did the propeller turn during this time
The head of a rattlesnake can accelerate at 50 m/s^2 in striking a victim. If a car can have the same acceleration, how long would it take for it to reach a speed of 100 km/h from rest.
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
Explain the sign of the acceleration and describe in words how the thread changes the velocity of the spider. would also like to know how to get to the answer can any one explain this to me in english?
A solid disk of mass m1 = 9.5 kg and radius R = 0.18 m is rotating with a constant angular velocity of ω = 39 rad/s. What average torque was exerted on the rod by the disk
The maximum electric field 8.3 m from a point light source is2.3 V/m. What is the power of the source
A circular coil with an area A=.4400m^2 is rotating in a magnetic field B=2.70T at a frequency f=60Hz. what is the peak Emf induced in the coil
An ideal toroidal solenoid has a cross-sectional area of 0.560cm^2 , a mean radius of 12.0cm , and 1650 turns. What is the self-inductance of this solenoid
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