Afriend doesn’t believe there are mountain ranges at the bottom of the ocean. about which of the following does he need more information

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

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 .