Two steel balls, one of mass 1 kg and the other of mass 2kg, simultaneously roll off the edge of the same horizontal table, each leaving with the same
velocity. Which of the following statement is correct?

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.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Compare the maximum rate of heat transfer to the basal metabolic rate by converting a bmr of 88 kcal/hr into watts. what is the value? from this comparison you should see why the body can accommodate a modes amount of activity in hot weather but strenuous activity would increase the metabolic rate above the body's ability to remove heat [12].