A car travels 10 miles East in 30 minutes. What is its velocity in miles per hour?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Why is metal often used for cooking pan?

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.