At the instant u = 60, the boy’s center of mass G is momentarily at rest. Determine his speed and the tension in each of the two supporting cords of the swing when u = 90. The boy has a weight of 60 lb. Neglect his size and the mass of the seat and cords.

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

heat the gas and measure the pressure

radiation

explanation:

heat is transmitted by radiation