A stone tumbles into a mine shaft and strikes bottom after falling 4.2 seconds. How deep is the mine shaft?

which of newton's three laws of motion allows us to determine the force required to do work on an object?

Which of the following statements describe the steps you need to take to delete a file? Select all that apply. Click on the X at the top right of the screen. Confirm the deletion. Open the file you want to delete. Select Delete from the File menu.

Which of the following lists arranges the colors of light from highest energy to lowest energy? a. red, green, blue b. blue, green, red c. green, red, blue d. red, blue, green

define constant speed

Which of the following items can enter and exit an isolated system?

Most earthquakes are produced by the rapid release of which kind of energy stored in rock subjected to great forces? a. kinetic b. thermal c. elastic d. mechanica

Liam is two-years old. His mother is concerned about his behavior. Liam is very different from how his sister Briana was when she was his age. He does not make eye contact. When she smiles at him, he doesn't smile back.

550 g of water at 105°C is poured into an 855 g aluminum container with an initial temperature of 11°C. The specific heat of aluminum is 900 J / (kg K).

what occurs when the soccer ball contacts the hands or arm of any player on the field except the goalkeeper?

Sand on a beach is covered by other layers of sand over time. The extra layers compress the first layer, packing it tighter and tighter. Over time, the bottom layers of sand have formed into sandstone, with colored bands showing the different layers.