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A. From a wire of length I0 and a cross-section of area A depends weight body W. (a) Show that if the wire obeys the Hooke Law, it behaves as a "spring" of constant AY/I0, where Y is the measure of Young (measure elasticity) of the material from which the wire is composed. (b) What is the value of the "spring" for copper wire (Y = 11*1010 Pa) of 75.0cm long and 1.291mm in cross-section. (c) What should be the body weight W dependent on the wire of the previous query so that this wire extends by 1.25mm.
B. A titanium alloy cylindrical specimen with a modulus of 107 GPa and an initial diameter of 3.8 mm is only elastically deformed when a vertical tensile load of 2000 N is applied. If the maximum permissible deformation is 0.42 mm, calculate the maximum length of the specimen before the deformation begins.
Nitrogen in a container (molar mass is 28 g/ mol) has a pressure of 2.59 atm, a volume of 0.200 m3 and a temperature of 30 degrees. What is the mass of the nitrogen
A train moving at a constant speed of 66.0 km/h moves east for 43.0 min, then in a direction 56.0° east of due north for 16.0 min, find the average velocity of the train during this run
Find out the maximum distance d (along the ladder) that the monkey can climb up the ladder before rope breaks.
How far up the incline will the skier move if the coefficient of kinetic friction between the skies and snow is 0.101
Consider a block of mass m sliding down an inclined plane andit has three forces acting on it (1) a gravitational force(pointing down). (2) a normal force perpendicular to the surface ofthe plane. (3) a friction force opposing motion down the plan..
For example, sound can not be detected with an optical sensor because sound is a longitudinal pressure wave and optical devices respond to EM radiation not sound waves.
A particle is moving on a circle with velocity v=-(1 m/s)(sin((4.5 rad/s)t)i + cos((4.5 rad/s)t) j). Evaluate what is its angular speed
She fires a very brief blast from her jetpack, which almost immediately gives her a speed of 3.7 m/s horizontally. She swings up along a circle and comes to a stop when her thread makes an angle q relative to the vertical. What is q in degrees?
a truck moving at 80mihr passes a police car moving 100mihr headed in the opposite direction. if the frequency of the
Two tiny conducting spheres are identical and carry charges of -29.7C and +46.6C. They are separated by a distance of 3.61 cm. what is the magnitude of the force that each sphere experiences?
Find the average force if the car is stopped in a collision that brings the driver's seat to rest in 0.100 s, assuming the driver is restrained by a seat belt
Two point charges of +5.0microcolumb +8microcolumb are placed inside a cube of edge length 0.100m. What is the electric flux due to these charges
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