4. Which is the greater force in the tug-of-war demonstration? A. Hewitt on Helen
B. Helen on Hewitt
C. same for both
5. If A pulls on B, then

What is the fate of the electrons that interact with a specimen in an electron microscope?

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?