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a) Bone has a larger Young's modulus for stretch (1.6 x 10^10 N/m^2) than for compression (0.94 x 10^10 N/m^2). By how much is each femur, or thigh bone, of the legs compressed when a weightlifter lifts 2200 N? Take the dimensions of the femur to be 0.6 m long and have an average radius of 0.01 m.
b) A medieval knight is "racked", stretching his body with a force of 1200 N. Using the data in the previous problem, by how much will the knight's femur bones be stretched?
A duck is swimming down a river and passes a slow moving log. If the log had a mass of 35.2 kg, and the duck was swimming at 3.00 m/s, what is the log\'s kinetic energy
In a physics lab experiment, a student immersed 201 one cent coins (each having a mass of 3.00) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.240 of water at 20 in an insulated contai..
A basketball rolls without slipping down an incline of angle ?. The coefficient of static friction is ?s. Model the ball as a thin spherical shell. Find the frictional force acting on the ball
What is the wavelength of radio waves. An electron in a TV is accelerated toward the screen across a potential difference of 54.2kV. How much kinetic energy does the electron gain while accelerating.
A uniform magnetic field of 25 mT magnitude points into the page. The wire is 1.4m long and straight, but has a loop smack in the middle. Calculate the amount of voltage induced if measured at the ends of the wire
A piston, A, as shown below, has a diameter of 0.61 cm. A second piston, B has a diameter of 3.7 cm. Determine the force, F, necessary to support 500.0 N weight in the absence of friction.
Consider a 0.200kg pendulum bob that is in an upright circular cylinder with a 0.0193 diameter, Draw a free body diagram and calculate the tension and the centripital acceleration at the bottom of the pendulum's swing
In a velocity selector, the uniform magnetic field of 1.6 T is produced by a large magnet. What voltage should be applied across the plates
A cometary nucleus rotates rapidly and has an albedo A=0.05. When its surface temperature reaches T?150K, How far is the cometary nucleus from the Sun
The electric field in an xy plane produced by a positively charged particle is 4.94(6.9i + 4.4j)N/C at the point (5.9, 5.8) cm, Determine the x and y coordinates of the particle
Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +21.0 km/s to ?17.8 km/s, What is the total change in the asteroid's velocity
An object is placed 40 cm from a concave mirror of radius 20 cm. Trace the image, show and find the location and characterize the image fully
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