A magnet produces a magnetic field. A current-carrying wire has a magnetic field around it. Its magnetic field interacts with the magnetic field of the magnet generating a magnetic force. A magnet will exert a force on: a. A current-carrying wire.
b. A piece of steel.
c. A beam of electrons.
d. All of the above.

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?