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A 1.0 m long rod has a density explained by λ =a + bx, where λ is the density in kilograms per meter of length, a = 2.0 kg/m, b =5.0 kg/m2, and x is the distance in meters from the left end of the rod. The rod rests horizontally with its end search supported by a scale. What do the two scales read?
Right scale
Left scale
Estimate the inductance of a solenoid made by buying a typical spool of wire from hardware store and winding it carefully around a broom handle.
A 55 kg person running horizontally jumps into a 15 kg sled that is initially at rest. The velocity of the person and the sled as they move is 2.5 m/s. What is the velocity of the person before he jumped into the sled? What is the kinetic energy o..
A charge of 190 µC is at the center of a cube of edge 75.0 cm. No other charges are nearby. Find the total flux through each face of the cube
a proton is released from rest in a uniform electric field of magnitude 412 nc. a find the electric force on the
A 0.75 kg ball attached to the end of a horizontal cord, is rotated in a circle of radius 1.9 m on a frictionless horizontal surface, What is the max speed the ball can have
A weather vane initially at rest has a moment of inertia of 0.110 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
what would the image distance be (pay attention to sign)? cm d. Could the new image be projected on a screen?
A raindrop inside a thundercloud has charge8e-. What is the electric force on the raindrop if the electric field at its location has magnitude 2.0 x 10^6 N/C and is directed upward
an object of unknown mass is initially at rest and dropped from a height h. it reaches the ground with velocity v1. the
The current in a resistor is given by I = (5.14) sin (70 pi t) when a voltage given by V = (180V) sin (70 pi t) is applied to it. What is the period of the voltage source
a runner starts from rest and in 3 seconds reaches a speed of 9 ms. if we assume that the speed changed at a constant
The fastest measured pitched baseball left the pitcher's hand at a speed of 42.0m/s. what acceleration did he give the ball
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