# ravin

Popular questions and responses by ravin
1. ## Physics

A hydraulic ram is a device that uses the pressure created by a large amount of water falling a small distance to raise a portion of that water to a much greater height. It is suitable in valleys where springs feed a stream below, where farms needing

2. ## Physics

12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point? How much potential energy did it

3. ## math

susy has 22 coins in her pocket totaling \$1.80. what combination of coins could she have *riminder the numbers of coins has to equal 22 but the amount has to equal to 1.80

4. ## Science

HELP! I have a friction question that says: What causes rocks to become smooth and founded. I know it's friction, but why?

5. ## math

A restaurant offers an "appetizer-plate special" consisting of six selections from its list of appetizers. If there are more than 8000 different possible appetizer-plate specials, what is the least possible number of appetizers?

6. ## math

how do you multiply intergers EX..... -4 x 5 = -20 4 x 5 = 20 right? Well the negative 4 makes your answer into a negative number also. Do you get it now?

1. ## math

13*13=169 13-1=12*2=24 169/24=ans

posted on July 27, 2016
2. ## spanish - HELP!

posted on March 7, 2016
3. ## Mathematics

2x+6 < 5(x-3) distribute 5 into x-3 2x+6 < 5x-15 move all x to one side 6 < 5x-15-2x simplify 6 < 3x-15 move 15 to other side 6+15 < 3x simplify 21 < 3x get x alone by dividing 3 on both sides 21/3 < 3x/3 simplify 7 < x and that's how you solve it.

posted on January 31, 2013
4. ## math

well you can always just plug the answers into both equations and solve them. Answer: A

posted on January 31, 2013
5. ## Is the nucleus composed of protons and neutrons?

protons and neutrons. The electrons are on the outside keeping the protons inside.

posted on October 24, 2012
6. ## math

Well first you add up the currently known grades: 84, 65, and 76. (known grades) Next multiply 80 by 4 to get the total amount for his test scores. (wanted average) Finally subtract the total for his known grades from his wanted average.

posted on October 24, 2012
7. ## Physics

okay that makes sense thanks.

posted on October 24, 2012
8. ## Physics

Well you know the force and mass. So use this formula: F=ma. F=250N m=20kg Just rearrange it and you will be able to get the maximum acceleration the sack can withstand before breaking.

posted on October 24, 2012
9. ## art

yellow, blue, and red.

posted on October 24, 2012
10. ## math

Well lets break this up first. Clue 1: is i am a 3 digit number less than 200, only number possible there is 1. Clue 2: is the tens is 2x ones' place. so look at clue 3. clue 3: The ones place is 2. So then the tens is 2 times 2 which is 4. So the number

posted on October 24, 2012
11. ## physics

For A you need to find the resultant. So since you know it moves 2.4 m/s north and 2.3 m/s east you can use the Pythagorean theorem to find it. For B i am not as sure about but it most likely is asking you to find the angle (based from east) where the boat

posted on October 24, 2012
12. ## math

how do you do intergers

posted on February 14, 2008