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In constructing a large mobile, an artist hangs an aluminum sphere of mass 5.3{\rm kg} from a vertical steel wire 0.42{\rm m} long and 3.0×10?3{\rm cm^2} in cross-sectional area. On the bottom of the sphere he attaches a similar steel wire, from which he hangs a brass cube of mass 14.1{\rm kg} .
a) Compute the tensile strain for the top wire.
b) Compute the tensile strain for the bottom wire.
c) Compute the elongation strain for the top wire.
d) Compute the elongation strain for the bottom wire.
A rocket moves with a velocity of 0.91c to the right with respect to a stationary observer A. What is the velocity of observer
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
A 1300-kg car moving on a horizontal surface has speed v = 55km/h when it strikes a horizontal coiled spring, What is the spring stiffness constant of the spring
A catapult on a cliff launches a large round rock towards a ship on the ocean below. calculate the speed at which the rock is launched
A coin placed on a turntable rotating at 40.0 rev/min will stay there if its center is placed no further than 8.5 cm from the axis of rotation, What is the coefficient of friction between the coin and turntable
Consider a mountain range that has been uplifting at a rate of 10 m/Myr for the past 5 Myr, the mountain range to come into a steady state with tectonic uplift, Estimate the soil thickness on the side of the mountain
A charged particle moves in a circle in a magnetic field. (a) Starting with the force relation, write the equation for the radius of the circle
A seed shoots out from the pod with the speed of 2.6m/s but with a direction of motion 30° below the horizontal. The seed pod is initially 1.1m above the ground.
A point particle that has a charge of 18.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 14.8 cm, y = 0. The electric force on a point particle that has a charge of 7.4 µC at x = 29.6 cm, y = 0 is -(19.7)..
A convex spherical mirror with a radius of curvature of 14.5 cm creates a virtual image one half the size of the real object. Where is the object.
Two manufactures of fiber optic material are in competition. ZipCo offers a fiber with a loss coefficient of 2.9E-3/m, Which company has the best offer
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 2.30 10-6 W/m2 at a distance of 110 m from the explosion. Find the distance from the source at which the int..
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