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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?
Two identical +45.3 nC point charges A and B, with masses of 3.0*10^-9 kg each, are fixed in place with a distance of 2.54 cm between them. Calculate the speed of charge B when it has reached a distance of 3.68 cm away from charge A
What was the bullet's flight time. A marble is thrown horizontally with a speed of 11 m/s from the top of a building. When it strikes the ground, the marble has a speed that makes an angle 38° with the horizontal. From what height above the ground..
A 25 g bullet strikes and becomes embedded in a 1.65 kg block of wood placed on a horizontal surface just in front of the gun, what was the muzzle speed of the bullet
A +4.5-µC charge experiences a 0.59 N force in the positive y direction. If this charge is replaced with a -1.0 µC charge, what force will it experience
A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence 54.2 degrees. what is the index reflection of the glass
A cannonball shot with the initial velocity of 129 m/s at an angle of 36° follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is the cannonball going as it hits the balloon.
A mass m=10kg is oscillates between two springs k 1 =100N/m and k 2 =200N/m. what is the maximum velocity of the mass
A piece of glass has a temperature of 80.6 ° C. Liquid that has a temperature of 43.0 ° C is poured over the glass, determine the specific heat capacity of the liquid
A vector A has a magnitude of 52.6 m and points in a direction 19.4° below the positive x axis. calculate the magnitude of the vector C
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
A cylindrcal waste basket with a .300 m radius and .150 m height is properly standing on the floor. Find the total flux of the electric field through the sides and bottom
A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. evaluate the magnitude of the electric field
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