How can a magnetic field be used

to create an electric current?

The structure of which substances tends to exhibit the greatest hardness? A. pure metals B. pure nonmetals C. ionic compounds D. covalent compounds

A plastic rod is rubbed with a fur. During the rubbing process, the rod acquires a negative charge. What type of charge does the fur acquire?

The acceleration due to gravity on Mercury is 3.7 m/s2, which is about six times the acceleration due to gravity on Pluto.

According to Freud which part of a persons personality is the largest

A 20-μF capacitor has a charge of 60 μC. How much energy is stored in this capacitor? A) 100 μJ B) 80 μJ C) 90 μJ D) 70 μJ E) 110 μJ

What's an example sentence using thermal energy

As air becomes warmer, how does the speed of sound in the air change

Chromatic aberration is caused by: A: imperfect shape of lens B: uneven filtering of various colors C: different refraction of the light spectrum D: uneaven reflection of light colors

What is Albert Einstein's contribution to the understanding of nuclear energy? A. He proposed that matter can be converted to energy and vice versa. B. He first discovered that nuclear-reaction products are lighter than the reactants. C.

A horizontal force, F1 = 65 N, and a force, F2 = 12.4 N acting at an angle of θ to the horizontal, are applied to a block of mass m = 3.1 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2.