Checkpoint 1 Three cells, each of emf 1,5 y, are connected in series to a 15 2 light bulb. The current in the circuit is 0,27 A. Calculate the internal resistance of each cell.​

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Which articulations allow for greatest range of motion?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.