Ahorizontal rectangular surface has dimensions 3.20 cm by 3.90 cm and is in a uniform magnetic field that is directed at an angle of 32.0 ∘ above the horizontal. part awhat must the magnitude of the magnetic field be to produce a flux of 3.80 ×10−4 wb through the surface? express your answer with the appropriate units.

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 .