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A lead bullet initially at 12.4oC just melts uponstriking a target. Assuming that all of the initial kinetic energyof the bullet goes into the internal energy of the bullet to raiseits temperature and melt it, calculate the speed of the bullet upon impact.
A block of wood has a mass of 3.72 kg and a density of 579 kg/m3. It is to be loaded with lead so that it will float in water with 0.72 of its volume immersed. The density of lead is 1.13 104 kg/m3. (a) What mass of lead is needed if the lead is on t..
You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force, estimate the banking angle of the plane relative to the horizontal
A solid sphere of radius 40.0 cm has a total positive charge of 30.0 µC uniformly distributed throughout its volume. Calculate the magnitude of the electric field
A bat in a cave emits a sound pulse and receives an echo 0.22 second later. Assuming that the speed of sound is 339 m/s, how far did the sound (the longitudinal wave) travel during this time.
A gas cylinder with a tight-fitting, movable piston contains 200 cm3 of air at 1.0 atm. What is the volume of gas at this depth
A rod of length l and mass m, pivoted at one end, is held by a spring at its midpoint and a spring at its far end, both pulling in opposite directions. The springs have spring constant k, and at equilibrium their pull is perpendicular to the rod. ..
A 1320-kg car is moving due east with an initial speed of 25.3m/s. After 11.5 s the car has slowed down to 15.2 m/s. Find the magnitude of the net force that produces the deceleration.
Find the minimum uncertainty in the speed of a bacterium hav-ing mass 3.0 x 10-15 kg if we know the position of the bacterium to within 1.0 micron, that is, to about its own size.
A 71 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. If the skier's speed at point A is 7.0m/s , what is the normal force exerted by the snow on the skier at point B? Ignore fricti..
The y-component of a dust particle's velocity is measured with an uncertainty of 1.0×10?6 m/s, What is the limit of the accuracy to which we can locate the particle along the y-axis
Consider a parallel-plate capacitor of 220 uF capacitance connected to a 1500 volt power source. The distance between the plates is .01 m. What is the charge in the capacitor
An airplane has a mass of 1.8×10^6 kg , and the air flows past the lower surface of the wings at 94 m/s .f the wings have a surface area of 1300 m^2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the ai..
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