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Thor throws his war hammer at an 1800 kg car initially at rest and it becomes embedded within it. if the war hammer has a mass of 20 kg and is moving at a velocity of 40 m/s, with what speed do the car and hammer move just after the collision? if the war hammer instead has a mass of 2.4 X 10^9 kg, being tghe density of a white dwarf, with what speed do the car and hammer move just after the collision?
A continuous line of charge lies along the x axis, extending from x = +x0 to positive infinity. What is the direction of the electric field at the origin
You are part of a searchand- rescue mission that has been called out to look for a lost explorer. What minimum speed must the rocket have just before impact in order to save the explorer%u2019s life
A 1.5m -long barbell has a 22kg weight on its left end and a 35kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
Two isolated conducting spheres of equal radius R have charges +Q and -Q, respectively. Estimate the capacitance of this unusual capacitor
The position of a particle moving along the x axis depends on the time according to x=ct^2-bt^3, what distance does the particle move and what is its displacement
A -2.47 ?C charge is placed at the center of a conducting spherical shell, and a total charge of +8.70, Calculate the total charge on the outer surface of the conductor
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
the time constant of an RL circuit with L=25mH is six times larger than the time constant of an RC circuit with C=55uF. Both circuits have the same resistance R. What is the time constant of the RC circuit?
A person with a mass of 78 kg is riding in an elevator that is accelerating upward at 170 m/s2. What is the person's apparent weight
A 1290kg car and 4860kg truck undergo a perfectly inelastic collision. Before the collision, the car was traveling southward at 1.80m/s, Find the velocity of the wreckage immediately after the collision
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 55.1 J, What is the kinetic energy of the system at the equilibrium point
At the bottom of the sea a small hole developed at the body of a submarine. at what speed the water is entering into submarine
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