An electromagnetic wave strikes a 2.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 5.00 10-4 T. How long does it take for the wave to deliver 1600 J of energy to the wall?

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 .