A 54.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 1.30 m, If her piston is 18.0 cm in diameter, what is the diameter of the football players' piston? Ive gotten 55.85 but thats not the right answer and not sure how to go about it

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Smallest intensity of a stimulus that you can detect 50 percent of the time is