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An old Chrysler with mass 2000 kilogram is moving along a straight stretch of road at 88 km/h. It is followed by a Ford with mass 1700 kilogram moving at 62 km/h. Find how fast is the center of mass of the two cars moving? (in km/h)
At a recent rock concert, a dB meter registered 130 dB when placed 1.50 m in front of a loudspeaker on the stage. What was the power output of the speaker
A duck flying horizontally due north at 14.2 m/s passes over Atlanta, where the magnetic field of the Earth is 5.09×10-5 T in a direction 55.9° below a horizontal line running north and south. The duck has a positive charge of 3.28×10-8 C. What is th..
An electric motor with 3W of power is used to lift a .2 kg mass a height of .5 meters in 3.0 seconds
Calculate the least velocity of projection required to give amissile a horizontal displacement of 500m if the angle ofprojection is 24 degrees
An object moves with constant acceleration 3.55 m/s2 and over a time interval reaches a final velocity of 12.8 m/s. What is the distance it travels during this interval
A proton of charge Q = 1.6x10-19 C and mass m = 1.67 x 10-27 kg is accelerated from rest through a potential difference of 3340 V. What is the final speed of the proton
A chair of weight 70 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 37.0 directed at the angle of 42 below the horizontal and the chair slides along the floor.
The pressure in a traveling sound wave is given by: ?p = (1.6 Pa) sin ?[(1.30 m-1)x - (375 s-1)t]. What is the pressure amplitude
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
A hungry 161-kg lion running northward at 75.5 km/hr attacks and holds onto a 35.9-kg Thomson\'s gazelle running eastward at 61.4 km/hr. Find the final speed of the lion-gazelle system
A 5.00-g lead bullet traveling at 300 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in te..
q1. find flux due to a point charge q on a rectangle of sides l x b at a distance r from the charge along the center of
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