If electromagnetic radiation has a frequency of 2.0×1015s−1, what is the radiation’s energy?(1 point) 3.0 ×1048J
3.0 ×1048J

3.3 ×10−49J
3.3 ×10−49J

1.3 ×10−18J
1.3 ×10−18J

9.9 ×10−41J
9.9 ×10−41J

What is the subscript for oxygen in its molecular formula

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c.vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false