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A rectangular plate of mass m Problems is falling with a velocity v0 and no angular velocity when its corner C strikes an obstruction. Assuming the impact to be perfectly plastic (e = 0), determine the angular velocity of the plate immediately after the impact.
The radioactive source in most smoke detectors is 241Am, which has a half-life of 432 years. Suppose only about 6.50×102 mg of this material is needed. What is the initial source activity
A concrete highway curve of radius 60 m is banked at a 13.0^circ angle. What is the maximum speed with which a 1300 kg rubber-tired car can take this curve without sliding? (Take the static coefficient of friction of rubber on concrete to be 1.0.)
A projectile of mass 0.900 kg is shot straight up with aninitial speed of 24.0 m/s. How high would it go if there were no air friction
The most massive flying dinosaur was the pterosaur. The average mass for a pterosaur has been estimated from skeletons to be between 80.0 kg and 120.0 kg. What is the length of the branch
A solenoid is 2.0 m long and with an inner radius of 30 cm and 1000 turns of wire. How large does the current does it carry
Two point charges are located on the axis as follows: charge = -2.00 at = -0.500 , and charge = 2.80 at the origin ( = 0). What is the magnitude of the net force exerted by these two charges on a third charge = 9.00 located at = 0.250?
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.80X106 m/s. Find the centripetal acceleration of the electron
A 9kg object is suspended from the ceiling by a strong spring, which then undergoes simple harmonic motion with a period of 0.4s. The block is brought to rest, and the equilibrium length of the spring with the block attached is measured. By how mu..
A 19g ball of clay is shot to the right (in the positive -direction) at 21m/s toward a 38g ball of clay at rest. The two balls of clay collide and stick together. Call this reference frame S. 1. What is the total momentum in frame S?
A mass of 0.5 kg is attached to the end of a massless spring of spring constant 0.75 N/m. What is the total energy contained in this system
Another example in which the emphasis is not on priors. You visit a family whose three children are all at the local school. You don't know anything about the sexes of the children.
Two displacement vectors each have magnitude 26 km. One is directed 45° below the +x-axis; the other is directed 45° above the +x-axis. What is the vector sum of these two displacements
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