When a cube of ice melts, how can you confirm that the mass has been conserved? A) Calculating the heat required to melt the ice

B) Adding a catalyst to the reaction

C) Observing how much of the ice is required in order to reach a certain volume of water

D) Measuring the mass of the ice cube, then measuring the mass of the now melted water

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Brades exam guidelines exam instructions billing & payments & support question 6 of 20 : select the best answer for the question use this illustration to answer the question below. forms & resources al programs 9 ww linics 6. in the circuit shown in the figure above, suppose that the value of r, is 100k, and the value of r2 is 470 kq. at which of the following locations in the circuit would you measure the highest voltage with your meter? rvices 999999 a. between points b and c b. between points a and b c. between points b and e d. between points a and c eredu mark for review (will be highlighted on the review page) mend < < previous question next question