Wrenn

A block of mass m = 5.0 kg is pulled along a rough horizontal surface by a rope as sketched in the figure below. ( rope is at a 30 degree angle from the horizontal) The tension in the rope is 50 N, and the coefficient of kinetic friction between the block...

A car of mass 1380 kg rests on a hydraulic lift with a piston of radius 0.24 m that is connected to a second piston of radius 0.029 m. If the car is just barely lifted off the ground, what is the force at the second piston? my work: 1380kg/.24m = F/.029m...

A mass-on-a-spring system has m = 54 kg and k = 225 N/m. The mass is pulled a distance 0.25 m from its equilibrium position and then released. (a) What is the maximum acceleration of the mass? My work: F=ma -kx=ma (225)(.25)=(54kg)(a) solve for a. a=1.04...

Molarity is the number of moles of solute dissolved in one liter of solution. The units, therefore are moles per liter so if you have .060 moles per liter and you have 25 liters, how many moles of NaCl do you have? now use the molar mass of NaCl to determ...

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