Think about the motion of a roller coaster car, after completing a trip around the track
the car's displacement is

a. The length of the pathway the roller coaster car traveled.
b. The starting point minus the finishing point
с. Zero
d. Half the distance because of vector addition

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

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?