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Four identical charges (+2.2 μC each) are brought frominfinity and fixed to a straight line. Each charge is 0.47 m fromthe next. Determine the electric potential energy of this group.
A block is sent up a frictionless ramp along which an x axis extends upward. The figure below gives the kinetic energy ofthe block as a function of position x; the scale of the figure's vertical axis is set by Ks =34.0 J.
q1. a person walks 44deg north of east for 3.43 km. how far would another person walk due north and due east to arrive
A point charge of 6.1 µC is at the center of a cubical Gaussian surface 60 cm on an edge. What is the net electric flux through the surface
A steel cable, ofcross-sectional area 2.70 10-3 m2, is kept under a tension of9.00 103 N. The density of steel is 7860 kg/m3 (this is notthe linear density). At what speed does a transverse wave movealong the cable?
What is the acceleration of two falling sky divers.
A ball is thrown upward with a speed of 10m/s relative to aballoon that is 50m above the ground while it is moving downwardwith a speed of 5m/s. How long does the object take to hit the ground
And if the plane could fly without this pilot, how much force would the plane require to maintain the equal acceleration?
In a loop-the-loop ride a car goes around a vertical, circular loop at a constant speed. The car has a mass m = 222.0 kg and moves with speed v = 16.16 m/s. What is the minimum speed of the car
The Space Shuttle travels at a speed of about 7.6 × 103 m/s. The blink of an astronaut's eye lasts about 110 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye
Suppose a sphere, thin hoop, and a disk were all rolling along a horizontal surface with the same speed, Which would roll up the hill the farthest
a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.
A photographic image of a building is 0.0920 m high. The image was made with a lens with a focal length of 55.0 mm. determine the height of the building.
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