If a light ray strikes a flat mirror at an angle of 30% from the normal, the ray will be reflected at an angle of ?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

How do we measure or think of speed in the united states?