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A 3m long cantilever with a mass of 250 kg is attached to a wall and also held in place with a steel cable that is attached to the far end of the cantilever at an angle of 30o with respect to the cantilever. A 5 kg mass too hangs from the far end of the cantilever. What is the magnitude of the normal force (in Newton’s) that the wall exerts on the cantilever?
A gray kangaroo can bound across a flat stretch of ground with each jump carrying it 9.0m from the takeoff point. What is the Kangaroos horizontal speed
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
Find the speed of water emerging from the hole if the leak is 2.9 below the surface of the water
A horizontal force of magnitude 36.4 N pushes a block of mass3.81 kg across a floor where the coefficient of kinetic friction is0.640. What is the increase in the kineticenergy of the block
A source of sound having a frequency of 330 Hz is moving at 25m/s. If the speed of sound in air is 340 m/s what is the frequency of sound heard by (a) someone in front of the moving source; (b)someone behind the moving source?
A 9.0 V battery moves 20mC of charge through a circuit running from its positive terminal to its negative terminal. How much energy was delivered to the circuit?
a 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block sticking to it. the system
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
In open heart surgery a much smaller amount of energy will defibrillate the heart, What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 55.0 J of energy
The manometer tube has an internal diameter of 0.5 cm and it is initially filled with water. Exactly 2 cm3 of an unknown liquid is then poured into one leg of the manometer, and a displacement of 5 cm between the surfaces is measured as shown. Fin..
The outfielder throws a baseball with an initial speed of 10 m/s. An infielder catches the ball at the level 1 m lower speed. determine the speed of the ball and its kinetic energy
A block starts with a certain speed at the top of a frictionless inclined plane with an unknown angle to the horizontal. To calculate the time required for the block to reach the bottom of the plane
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