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?
m1v0+m2v0=m1v1+m2v2
or
m1v0-m2v0=-m1v1+m2v2...
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...
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...
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...