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A 1.5 kg mass is held at rest on top of a frictionless and horizontal table. A light string loops over a pulley which is in the shape of a 10 cm radius solid disk which has a mass of 1.5 kg. The light string then supports a mass of 1.5 kg which is hanging in air. The mass on the table is released and the suspended mass falls. What is the acceleration of the falling mass. What is the tension in the string which is attached to the sliding mass on the table? What is the tension of the string which supports the hanging mass?
A driver travels northbound on a highway at a speed of 22.0 m/s. What frequency does the driver detect after the police car passes him
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
three electric charges QA=q,QB=-q and Qc=-2q are located at the points A(x=+a,y=0),B(x=-a,y=0) and c(x=0,y=+2a) respectively. what is the value of the electric potential at the origin
question1a solid piece of copper and a solid piece of aluminium have the same mass. if the density of copper is 8.9
A 1 m long pedulum with a 2kg mass is pulled back 0.1m and after that released, so that it swings back and forth. How did they solve T= 2.007 seconds.
A spring is hung from the ceiling. A 0.430 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
q1. a charge of -2.55 nc and a charge of -5.25 nc are separated by a distance of 40.0 cm. find the position at which a
A box of mass 19.0 kg is sitting on a flat horizontal floor with a coefficient of static friction of 0.30 between the box and the floor. What minimum tension in the string is required for the box to just start moving
A block is dropped onto a spring with a spring constant, k, of 27 n/m. the block has a speed of 2.2 m/s just before it strikes the spring. what is the increase in potential energy of the spring
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, How far away is the planet according to observers on earth
Find the focal length of a concave mirror if an object 12cm from the mirror has a virtual image 2.1 times the object's actual size
The magnitude of the field produced by a point charge of +5.4 micro-coulombs has a magnitude of 5.9 x 106 N/C, How far is the point from the charge
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