Write an M ( Mechanical Wave ) or an E ( Electromagnetic Wave) next to the words:
- X-ray
-Infrared
-A string vibration
-A scream

What are atoms of the same element with varying number of neutrons

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.