Acircular solenoid of radius r = 2cm passes through a square loop of wire with 1 turn and sides of length ℓ = 5cm. the solenoid is wound with n = 150 turns of over a length 20cm. the solenoid is connected to a resistor and therefore the current in the solenoid is decreasing according to the function isol = i0e −t/τ where i0 = 0.1a and τ = 40s. the system is drawn to the right. the magnetic field in the solenoid points out of the page as drawn. calculate the emf around the square loop (dark square) at t = 0. select one of the following: (a) |emf| = 3.0 × 10−9v (b) |emf| = 1.9 × 10−8v (c) |emf| = 3.5 × 10−8v (d) |emf| = 2.2 × 10−7v (e) |emf| = 3.7 × 10−7v

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

answer: a. same unit

explanation:

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j