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A uniform rod of mass 3.20×10?2 and length 0.430 rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 , are mounted so that they can slide along the rod. They are initially held by catches at positions a distance 5.50×10?2 on each side from the center of the rod, and the system is rotating at an angular velocity 25.0 . Without otherwise changing the system, the catches are released, and the rings slide outward along the rod and fly off at the ends. 1) What is the angular speed of the system at the instant when the rings reach the ends of the rod? (find w_system) rev/min 2) What is the angular speed of the rod after the rings leave it? (w_rod) rev/min
You are playing raquetball at the rec center. When you are 10 m away from the wall you hit a ball 26m/s towards the wall at an angle of 30 degrees. How long is the ball in the air before it hits the wall
The coil is flipped so its plane is vertical to the magnetic field in 0.050 s. What is the magnitude of the average induced emf.
A point source of light is submerged 2.4 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
A girl throws a rock horizontally with a speed of 12.0 m/s from a bridge. It falls 2.28 seconds before reaching the water below. How high is the bridge from the water? How far horizontally does the rock travel before striking the water.
The pilot of an aircraft wishes to fly due west in a 47.7 km/h wind blowing toward the south. In what direction should the aircraft head
Uniform plate of height 1.980 m is cut in the form of a parabolic section. Find the moment of inertia of the plate
What is the difference in blood pressure ({rm mm-Hg}) between the top of the head and bottom of the feet of a 1.80-{rm m}-tall person standing vertically.
The isotope 226 Ra Alpha decays. its measured atomic mass is 226.02541 amu, the daughter nucleus has a mass of 222.01758 amu and helium has atomic mass 4.0026 amu. calculate the kinetic energy of the alpha particle
The induced electric field 15 from the axis of a solenoid with a 10 radius is 46. Find the rate of change of the solenoid's magnetic field
The power rating of a resistor is 0.800 W. The value of the resistor is 400 O. What is the maximum current it can draw
The object to be viewed is placed 2mm beyond the focal point of objective lens. What is the overall magnification of this microscope.
A uniform magnetic field B is perpendicular to the plane of a circular loop of radius r. Find the emf in the loop as a function of time
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