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At the right you see that a string (mass negligible) passes over a pulley. The puley has no friction. The 5 kg mass sits on the ground and a 1.5 kg mass hangs from the other side of the string. Please calculate the normal force of the floor on the bottom of the 5 kg mass.
Would a plucked guitar sting vibrate for a longer time or a shorter time if the instrument had no sounding board? explain.
A ceramic coffee pot with m=116g and c=1090J/(Kg*k), is initially at room Temp(24 celcius). what is the equalibrium temerature of the sysytem
A magnesium surface has a work function of 3.68 eV. Calculate the maximum kinetic energy of the ejected electrons
generator has a terminal voltage of 115 V when it delivers 18.0 A, alculate the emf (e m f) and the internal resistance (r) of the generator
A student throws a set of keys vertically upward to her sister in a window 4.0 m above. The keys are caught 1.5 s later by the sister’s outstretched h&. Find initial speed were the keys thrown?
Question on constant speed
What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign.
A battery produces 41.4 V when 7.40 A is drawn from it and 46.2 V when 2.20 A is drawn, What is the internal resistance of the battery
A student in an undergraduate physics lab is studying Archimede's principle of bouyancy. The student is given a brass cylinder and using a triple beam balance finds the mass to be 1.25 kg
What is the pressure (in kPa) exerted by an object that has a base which is 2cm by 4cm nd a weight of 45N.
A kayaker needs to paddle north across an 85 m wide harbor. The tide is going out, creating a tidal current that flows to the east at 1.7 m/s. The kayaker can paddle with the speed of 3.0 m/s.
A parallel plate capacitor (air filled) that is maintained at a 20.0 V potential difference between plates, Calculate the surface charge density, and the charge on each plate
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