The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. an engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill. if the initial velocity of the coaster at the top of the hill is 10 feet per second, how high should the engineer make the hill?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

When using the scientist method, which step comes last?

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb