What fraction of a given sample of radioactive nuclide remains after four half lives?

You are stranded in a blizzard. You need water to drink to drink, and you're trying to stay warm. should the melt the snow and drink it or just eat the snow? Explain

Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he works in the yard.

You are to drive to an interview in another town, at a distance of 310 km on an expressway. The interview is at 11:15 a. m. You plan to drive at 100 km/h, so you leave at 8:00 a. m. to allow some extra time.

For two traveling waves, if the crest of one wave coincides with a trough of another, what type of interference occurs?

Bill and Bob are carrying loads of trash to the dump. They are walking down the sidewalk, side by side but Bob begins to lag behind Bill. Explain what's happening using one of Newton's Laws of Motion. A) Newton's 2nd Law.

Which is the correctly balanced equation for the reaction of rust, Fe2O3, and hydrochloric acid, HCl? Fe2O3 + HCl → FeCl3 + H2O Fe2O3 + 3 HCl → 2 FeCl3 + H2O Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O Fe2O3 + 3 HCl → 2 FeCl3 + 3 H2O

How many DNA strands could you fit into a milimeter

A screwdriver with a 1-cm shaft and a 4-cm handle is used to tighten a screw. calculate the ideal mechanical advantage.

Plants make food through photosynthesis, a chemical reaction. What are the starting substances of the reaction?

How long will it take to travel 200,000 m traveling 100 m/s?