Put m1 back to 10 kg. This time, double m2 (to 960 kg) and observe the gravitational force. Do you get a different result if you double m1 compared to doubling m2?

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?