The centers of two 15kg spheres are separated by 3 m. The magnitude of the gravitational force between the 2 spheres is approximately? Round your answer to the first 3 non zero digits. Example 1.2345 x 10^5 = 123000 and 1.2345 x 10^-3 = 0.00123

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 .