Recent content by metallica007

Thank you very much guys :)

Hi everyone When using the concept of the conservation of the linear momentum ΣPi = ΣPf to solve a problem, should I consider the the direction of the velocity? For Example, the following problem which one of the following equations is correct...

Homework Statement A small container of water is placed on a carousel inside a microwave oven, at a radius of 12.0 cm from the center. The turntable rotates steadily, turning through one revolu- tion in each 7.25 s. What angle does the water surface make with the...

Thx a lot everyone

Hi everyone I need your help in the following problem: Some dry ice (solid carbon dioxide) at -78oC is placed in a steel jar, which is subsequently sealed. The jar is immersed in a large beaker of water at room temperature until the dry ice has completely vaporized. If the measured energy...

Thx everyone for your help... You helped me to understand the subject I appreciate it :)

Hello everyone I know my question might be strange and stupid but I have to ask it! When an object attached to a string and moved in a horizontal uniform circular motion, the tension of the string will point to the center of the circular motion, right? Well, I can't see why! I know that the...

Hello everyone... I need ur help in the following problem Homework Statement A perfect rope connects a 20 kg block to a 30 kg block. The rope passes over a perfect pulley at the top of a 53 ° incline. The 30 kg block rests on the incline and the 20 kg block hangs from the pulley. The blocks...