Which products do you think required scientific knowledge to develop? Check all that apply.

_ a flashlight

_ a cell phone

_ a hair dryer

_ eyeglasses

_ a microwave

_ a household cleaner

When the same force id applied to a smaller area, the pressure is A. Lower B. greater C. Reduced D. The same

How are carbon tetrachloride and sodium chloride different from each other?

A mountaintop is a height y above the level ground. A woman measures the angle of elevation of the mountaintop to be θ when she is a horizontal distance x from the mountaintop.

Which is a sign of a chemical change?

A wave With wavelength 20 m has a frequency of 12 Hz what is the waves speed

My Notes A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line.

How does sound travel through waves?

Solve for real t: - 25=20t-5t^2

Contrast balanced and unbalanced forces.

A wave will travel only as long as it has energy