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The body of an automobile is to be protected by a spring-loaded bumper, which is attached to the automobile's frame. Design the bumper so that it will stop a 3500-lb car travelling freely at 5 mi/h and not deform the springs more than 3 in. Submit a sketch of your design showing the placement of the springs and their stiffness. Plot the load-deflection diagram for the bumper during a direct collision with a rigid wall, and also plot the deceleration of the car as a function of the spring's displacement
a dinoflagellate takes 5.2 s to travel 0.6 mm. approximate a dinoflagellate as a sphere of radius 35.0 microm ignoring
a student using a resonance tube determines the three resonances occus at distances of l1 0.172m l20.529m l30.884m
A log is floating on swiftly moving water. A stone is dropped from rest from a 72.0-m-high bridge and lands on the log as it passes under the bridge. what is the horizontal distance between the log and the bridge
A series RLC circuit has a peak current of 1.0 A with a frequency of 54 kHz. If the resistance of the circuit is 51 k??, determine the average power of the circuit
a positive charge of q1 is located 5.50 m to the left of a negative charge -q2. the charges have different magnitudes.
a hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake.
Two charged spheres are 8.45 cm apart. They are moved and the force on each of them is found to have been tripled. How far apart are they now.
How to compute number of exchanged virtual photons per unit of time among two electromagnetically interacting objects?
From the shore, you observe a buoy in the ocean rising and falling with the waves. You determine it takes 5 s for the buoy to go down and up again, Approximately how fast are the waves moving
a stone is thrown upward at an angle of 43degrees above the horizontal. it's maximum height during the trajectory is 55m. what was the stone's initial speed
two masses m1 and m2 are connected via a massless unstrecthable string over a massless pulley. mass m272n rests on the
q1. illustrate the force vectors with their tails at the origin of coordinate system. the orientation of your vectors
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