Which factor is most important to keep the same when comparing the hardness of solids?
A. The intensity of the light
B. The temperature of the hot plate
C. The method of making a scratch on the material
D. The amount of each substance

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?

Why don't you see your reflection in water with waves or repples

Which of the following are guidelines to follow for obtaining accurate observations