Fi say that an electron is a spin-1/2 particle, which of the following statement(s) is/are true?
a) the magnitude of the spin vector is 1/2
b) the magnitude of the spin vector is hbar/2
c) the magnitude of the spin vector along some axis is 1/2
d) the magnitude of the spin vector along some axis is hbar/2

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0