Aresistor and an inductor are connected in series to a battery with an emf of 240 v and has negligible internal resistance. the circuit is completed at a time we will define to be t=0 and at a time t = t the current in the circuit is 5.00 a and it is increasing at a rate of 20.0 a/s. after a very long time, the current in the circuit is 15.0 a. what is the value of t?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .