Three boxes of identical size and shape are dropped from a height of one meter: Box A contains a feather. Box B contains an orange. Box C contains a soccer ball. Describe what will happen when the boxes are dropped. How does the mass of the objects affect what happens when the boxes are dropped?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up