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A box of mass m is released from rest on an inclined plane as shown in the diagram. The initial height is 4.5m relative to the floor. What will be the speed of the block when it is at height 1.5m from the floor?
A cylinder of brass has a diameter of 3mm and a length of 100mm. What is the stress in the cylinder
An electron with a speed of 5.83 x 108 cm/s enters an electric field of magnitude 4.92 x 103 N/C, traveling along the field in the direction that retards its motion.
A cylindrical space probe adjusts its shape by extending and retracting masses. The probe is set rotating along the cylinder’s axis and released. The maximum rotation rate is 5 rps and minimum rotation rate is 1 rps.
Discuss how big is a physical protocol data unit and determine the number of simultaneous transmissions for many network architectures.
A small block with mass 0.200 kg is attached to a string passing through a hole in a frictionless, horizontal surface. What is the radius of the circle when the string breaks
Neglect friction, what steady force, applied at its outer edge and perpendicular to plane of the door, can move it from rest through an angle of 90° in 30 s.
A ball is thrown from an upper story window of a building. Find from what height above ground, was the ball thrown
An electron is confined to a region of space of the size of an atom (0.1 nm). What is the uncertainty in the momentum of the electron? What is the kinetic energy of an electron with a momentum equal to deltaP ?
Two adjacent natural frequencies of an organ pipe are determined to be 351 Hz and 405 Hz. (Assume the speed of sound is 343 m/s.) (a) Calculate the fundamental frequency of this pipe. Hz (b) Calculate the length of this pipe. m
find the vertical component of a baseball's velocity if the ball is thrown at a 28m/sec at an angle of 37 degrees with the horizontal.
A 165 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a battery with emf of 21.3 V. If the 165 pF capacitor stores 112 pC of charge on its plates, what is the unknown capacitance.
A half-infinite well has an infinitely high wall at the origin and one of finite height U0 at x = L. Like the finite well, the number of allowed bound states is limited. Assume t it has two states, of energy E1 and E2, where E2 is not much below U..
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