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The femur is a bone in the leg whose minium cross-sectional area isabout 4.20 10-4 m2. A compressional forcein excess of 6.90 104 N will fracture this bone.a) Find the maximum stress that this bone can withstand.b) What is the strain that exists under a maximum-stresscondition? (See Table 10.1 for appropriate constants)
A child stands at the rim of a rotating merry-go-round of radius 2.8 m. The child has a mass of 51.0kg, and the carousel turns with an angular velocity of 2.3 rad/s. What minimum coefficient of static friction is required
Two negative, equally charged drops of water, 0.80 mm apart, exert an electrostatic force of 78.5 x 10-9 N on each other. Determine the net charge on each drop.
Consider twosections of wires with currents as shown above. The force on the short wire due to the long wire is toward theright. The forceon the short wire due to the long wire is upward.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ^circC? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
A prospector finds a solid rock composed of granite (density = 2650 kg/m3) and gold, What mass of gold is contained in the rock
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
bloodhound a 1000 mph super-sonic car can accelerate from a standing start to 1000 mph in less than 42s. during this
A motorcycle has a constant speed of 27.7 m/s as it passes over the top of a hill whose radius of curvature is 168 m. determine the normal force that acts on the cycle
question 1 a determine the magnitude and direction of the electrostatic force acting on particle a in the figure given
a 43.0 kg ballet dancer stands on her toes during a performance with four square inches 26.0 cm2 in contact with the
The four tires on the author's car are inflated to an absolute pressure of 2.7x10^5 Pa. obtain the contact area between each tire and the ground
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