Read the statements below and select the ones you think are facts. Check all that apply. 1Beer and wine are safer than liquor.
2 The amount of alcohol one drinks is more important than the type of alcohol. 3Alcohol is not as bad for you as other drugs.
4If you force yourself to vomit right after you drink alcohol, you will not get drunk.
5 You can sober up quickly by taking a cold shower or drinking coffee.
6 Most teenagers do not drink alcohol.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Amass m = 74 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius r = 18.4 m and finally a flat straight section at the same height as the center of the loop (18.4 m off the ground). since the mass would not make it around the loop if released from the height of the top of the loop (do you know why? ) it must be released above the top of the loop-the-loop height. (assume the mass never leaves the smooth track at any point on its path.) 1. what is the minimum speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track? 2. what height above the ground must the mass begin to make it around the loop-the-loop? 3. if the mass has just enough speed to make it around the loop without leaving the track, what will its speed be at the bottom of the loop? 4. if the mass has just enough speed to make it around the loop without leaving the track, what is its speed at the final flat level (18.4 m off the ground)? 5. now a spring with spring constant k = 15600 n/m is used on the final flat surface to stop the mass. how far does the spring compress?