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For small stretches, the Achilles tendon can be modeled as an ideal spring. Experiments using a particular tendon showed that it stretched 2.66mm when a 125kg mass was hung from it. Find the spring constant of this tendon. How much would it have to strech to store 50J of energy?
An undamped 1.58-kg horizontal spring oscillator has a spring constant of 22.8 N/m. What is the oscillator\'s total mechanical energy
An aircraft weighing 959 N is accelerated at 9 m/s/s for 11 seconds, How much work was done on the aircraft
a student m 97 kg runs at a velocity vi 2.85 ms before jumping on a skateboard. after jumping on the board the
Over a time interval of 2.17 years, the velocity of a planet orbiting a distant star reverses direction, changing from +17.9 km/s to -18.0 km/s. find the total change in the planet's velocity
An emf is induced in a conducting loop of wire 1.46m long as its shape is changed from square to circular. Find the average magnitude of the induced emf
Electromagnetic wave 1 has a maximum electric field of 56V/m , and electromagnetic wave 2 has a maximum magnetic field of 2.0muT, Calculate the average intensity of the first wave
A piece of copper wire has a resistance per unit length of 5.95 10-3 ?/m. Find the magnetic field strength at the center of the coil
A mirror is to be used to project a 2.00 tall image on a screen which is 4.70 from the mirror. What magnification is necessary to accomplish this task
In a crash test, a 1100 kg car slams into a concrete wall at 17.1 m/s and comes to rest in 0.275 s. a)Find out the magnitude of the impulse delivered to the car.b) Find the average stopping force.
A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpediculat to wall and rebounds with 70.0% of its inital kinetic energy. find the magnitude of the change in momentum of the wall
you decide to determine the depth of a tank of water using the suns light. with the sun overhead the tanks bottom is
two automobiles are equipped with the same single-frequency horn. when one is at rest, What is the frequency the horns emit
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