Suppose an electron is moving with a constant velocity until it encounters a positively charged sphere on its right. how does the sphere alter the trajectory of the electron?

a. it has no effect on the trajectory of the electron
b. it deflects the electron to the right.
c. it deflects the electron to the left.
d. impossible to tell

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 .