The current through the battery and resistors 1 and 2 in Figure (a) is 2.90 A. Energy is transferred from the current to thermal energy Eth in both resistors. Curves 1 and 2 in Figure (b) give the thermal energy Eth dissipated by resistors 1 and 2, respectively, as a function of time t The vertical scale is set by Ethis = 50.0 m), and the horizontal scale is set by ts = 5.00 5. What is the power supplied by the battery? ​

Asimply means that over time there was some sort of change.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants