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this is a pretty good party trick. tip your head back and pucker your lips, then blow out to make a strong stream of air straight up. then place the ping pong ball in the air stream and it will float! tip: keep the air stream strong and constant and you should be able to keep it up for 4-5 seconds before gravity takes over.
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Why do ping pong balls float?
If they float in water, then it is because the density of a ping pong ball is lighter than the density of water. The density of water is just below 1, and the density of a ping pong ball is much less than 1.
How would you find the volume of a golf ball?
Put an exact amount of water in a measuring cup. Drop in a golf ball. The increase in water level equals the volume of the golf ball, assuming the ball doesn't float. For example, 200mL before ball. 280ml after ball dropped in. Therefore volume equals 40ml or 40 Cubic Centimeters.
What eliminates all float time?
Check 21 is what eliminates float time
Write a program to calculate compound interest?
#include<stdio.h> #include<conio.h> void main(); { float p,r,t; float ci(float,float,float); clrscr(); printf("\n enter principle\n"); scanf("%f",&p); printf("\n enter rate\n"); scanf("%f",&rate"); printf("\n enter time\n"); scanf("%f",&time"); printf("\n compound interest is%f ",ci(p,r,t)); getch(); } float ci(float a,float b,float c); float(result); result=p(1+r\100)^c-1); return(result); }
A ping pong ball falls into a tight deep pipe The pipe was only a bit wider than the ball so you can not use your hand How would you take it out with no damage?
Use a straw to suck that ball Take it out from the other end of the pipe Use some sticky chewing gum on the end of a bit of string, or a cane - also handy for getting screws and things off the floor when you drop them down between things Fill the pipe with water and the ball will float out. Turn the pipe upside down Answer Use a vacume cleaner.
