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A homogeneous bar of length L can rotate on a horizontal frictionless plane around a vertical axis passing during one of its ends (moment of inertia I = ML2/3). It is at rest until a small bullet of mass m with velocity v perpendicular to the bar hits it in the midpoint, bouncing back with velocity v’ = -v /3. Given that the mass M of the bar is 9 times larger than the mass m of the bullet, compute the final kinetic energies of the bullet and of the bar. Decide if the collision was elastic or not.
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. What is the proper orientation of the coil
The image behind a convex mirror (radius of curvature =74 centimeter) is placed 4 centimeter behind the mirror. Find what is the magnification of the mirror
a if 8 percent of the power of a 100 w bulb is radiated in the visible spectrum how many visibly photons are radiated
A 1.00 kg glider attached to a spring with a force constant49.0 N/m oscillates on a horizontal,frictionless air track. Find the position, velocity, and acceleration as functions of time
two objects are orbiting each other under the influence of the force of the gravitation force between them. object 1
One fine spring afternoon, you go outside to play a rousing game of hoop-and-stick. If your hoop rolls without slipping, what is the angular speed of the hoop
when an electric heater is turned on the nichrome heating element is at 0deg c and draws a current of 17 a with a
White light is incident on a soap film (n = 1.30) in air. The reflected light looks bluish because the red light (? = 684 nm) is absent in the reflection. What is the minimum thickness of the soap film?
A 15.0 kilogram small block is pushed against a vertical wall with a horizontal force. find what minimum horizontal force must be applied
A 27 pound meteorite struck a car, leaving adent 10 cm deep in the trunk. Ifthe meteorite struck the car with a speed of 250 m/s, what was the magnitude of its deceleration
A school bus takes 0.89 h to reach the school from your house. If an average velocity of the bus is 21.1 km/h to the east, what is the displacement.
a space probe journeys at a constant velocity from earth to tau ceti a distance of 11.5 y in a time of 1.4 y as
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