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A uniform thin rod of length 0.50 m and mass 6.0 kg can rotate in a horizontal plane about a vertical axis through its center. The rod is a rest when a 3.0-g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the direction of the bullet velocity makes an angle of 60° with the rod . If the bullet lodges in the rod and the angular velocity of the rod is 9.0 rad/s immediately after the collision, what is the magnitude of the bullet's velocity just before impact?
a bat emits a sound whose frequency is 90.7 khz. the speed of sound in air at 20.0 oc is 343 ms. however the air
Two long, straight, parallel wires of length 4.5 m carry parallel currents of 3.1 A and 1.1 A. If the wires are separated by adistance of 3.4 cm, what is the magnitude of the force between the two wires?
What is the area (in m2) of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2.900 ?m, what is the length (in m) of the fiber?
A block with mass m = 16.0 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4997.0 N/m after being compressed a distance x1 = 0.548 m from the spring's unstretched length. find the speed of the block right af..
three children are throwing snowballs at each other. child a throws a snowball with a horizontal velocity v. if the
In the following figure (Figure 1) , R = 14.2Ω and the battery emf is 6.17 V . With switch S2 open, switch S1 is closed. After several minutes, S1 is opened and S2 is closed. At 1.99 ms after S1 is opened, the current has decayed to 0.348 A . Calcu..
a container of ideal gas for which the thermal energy is given by eth 2.6 n r t is initially at pressure pi 1.1 x
A small metal sphere has a mass of 0.19g and a charge of -27.0nC. It is 10 cm directly above an identical sphere with the same charge. What is the magnitude of the force between the spheres
a flywheel in the form of a uniformly thick disk of radius 1.33 m has a mass of 54.1 kg and spins counterclockwise at
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.1 mT. Estimate the time it takes to complete one revolution
The measured current in a circuit in your uncle's house is 14 A current. What is the voltage at the wall outlet in the bathroom that the space heater is connected to
A cannonball is shot (from ground level) with an initial horizontal velocity of 33 m/s and an initial vertical velocity of 25 m/s. What is the initial speed of the cannonball
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