The speed of a wave on a rope is 50cm/s an its wave
length is 10cm. What is its frequency

Gymnast always perform on padded mats. how does the mats protect the gymnast

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.