A Projectile Is Fixed At An Angle of 30 Degree with horizontal. The speed of projectile is 20m/s. Calculate time of light and range

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

What can you increase the strength of an electromagnet by

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?