An atom with 19 protons and 18 neutrons is an

The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of - 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long ending at the tree.

Must a new substances be formed when you observe a chemical property? Explain.

What would happen if the sun exploded.

sound · parallel · mechanical · not a vacuum · needs a medium · compressions and rarefaction What type of wave is being described? A) compaction B) electromagnetic C) longitudinal D) transverse

Be sure to answer all parts. Indicate the number of protons, neutrons and electrons in each of these species: (a) 13 N 7 (b) 35 S 16 (c) 63 Cu 29 (d) 89 Sr 38 How many protons are in each isotope? How many neutrons are in each isotope?

Television is becoming a more effective mass media outlet for advertising because so many more people own TV sets and have access to cable as well as satellite. A. True B. False

How to solve indices

The elements in group 17 of the periodic table are called halogens. all halogens have the same?

Baby Susie's pediatrician notices that one of her eyes rotates outward and that she does not appear to be using it for vision. What is her condition and what does the pediatrician recommend?

All the interconnected paths of energy flowing from species to species in an ecosystem is called a a. trophic level. b. food chain. c. detrital food web. d. food web.