If you balance the equation below, what should be the coefficient for rubidium(rb)? rb(s) + cl2(g) > rbcl(s) a. 4 b. 2 c. 1 d. 3

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

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?