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A 230g baseball is pitched at 42m/s spinning at 40rad/s . You can treat the baseball as a uniform solid sphere of radius 4.0cm .
What fraction of its kinetic energy is rotational?
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
A quarter circle of electric charge with a radius of 2.5 m has a uniform charge density of +0.7x10^-6 C/m. At the center of the circle
What is the speed of the arrow as it leaves the bow.
A pump is required to lift a mass of 780kg of water per minute from a well of depth 13.7m and eject it with a speed of 17.9m/s, What must be the power output of the pump
What is the total magnitude of the magnetic flux by the coil before it is rotated.
one end of a uniform beam of 222N is hinged to a wall, the other end is supported by a wire that makes angles of 30 with both wall and beam, find out the tension in the wire and horizontal and vertical componentes of the force od the hinge on the ..
Two stationary positive point charges, charge 1 of magnitude 3.65 and charge 2 of magnitude 1.80 , are separated by a distance of 58. An electron is released from rest at the point midway between two charges, and it moves along the line connecting..
A spring stretches 0.150 when a 0.300 kg mass is hung from it. The spring is then stretched horizontally 0.100m from its equlibirum point and released. determine maximum acceleration of mass
A wire carries a current of 0.665 A. This wire makes an angle of 55.5° with respect to a magnetic field of magnitude 4.92E-5 T, What is the length of the wire
A particular guitar string is supposed to vibrate at 200Hz, but it is measured to actually vibrate at 209Hz. By what percent should the tension in the string be changed to get frequency to the correct value.
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
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