Which of the following is a device that uses a wedge? Check all that apply.
A. doorknob
B. axe
C. knife
D. baseball bat

Who was the first scientist to measure speed as distance over time?

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?