Answer: 189
All Steps and Information Found in Image.
Hope This Helped!
Answer:
A
Step-by-step explanation:
It asks which material is the densest, the answers are lead, plastic, steel, or wood. Lead is the most dense. Plz mark brainliest
6.40 is to two decimal places
Energy = Planck's constant * frequency
= 6.626 * 10^-34 * 5.66 * 10^8
= 3.7503 * 10^-25 Joules