A 12 kg computer is sitting on a table and the coefficient of static friction between the computer and the table is 0.7. If the computer is pushed with a horizontal 30 N force, what is the actual force of static friction between the computer and the table? First ask: Is the applied force sufficient to overcome static friction? Once you know this you can determine the force of the static friction.

Astring that is fixed at both ends has a length of 1.05 m. when the string vibrates at a frequency of 91.0 hz, a standing wave with five loops is formed. (a) what is the wavelength of the waves that travel on the string? (b) what is the speed of the waves? (c) what is the fundamental frequency of the string?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.