# Posts by Paulina

Total # Posts: 21

**Physics**

a 24kg metal ring with 24cm diameter rolls without stopping down a 30 degree incline from a height of 3.4 m 1) according to the law of conservation of energy what should be the linear speed of the ring at the bottom of the ramp (I'm guessing that i solve for Vfrictionless...

**Math (please help)**

In a blueprint, each square has a side length of ¼ inch. 1 in. : 6 ft Bathroom - 6 squares Bedroom - 20 squares Living Room - 28 squares a. Ceramic tile costs $5 per square foot. How much would it cost to tile the bathroom? $ b. Carpet costs $18 per square yard. How ...

**Biology**

how are hypotheses and theories related?

**Physics**

A diver thinks that if a typical snorkel tube of 0.13 m length works, then a tube of length 6.2 m should also work. When trying to use such a tube, what is the pressure difference between the external pressure on the diver's chest and the air pressure in the lungs of the ...

**Physics**

Calculate the height of the brain above the heart for an animal with an additional blood pressure of 222 mmHg in the heart. Use ρ = 1.055 g/cm3 for the density of blood.

**Science**

Which of the following is not an example of recording data?

**polution**

Water Pollution

**physics**

If a vector that is 1cm long represents a velocity of 10km/h, what velocity does a vector 2cm long drawn to the same scale represent? An airplane has an airspeed of 100km/h north. If there is a 30 km/h tailwind, what is its groundspeed?

**Math**

a rectangle is to be fenced with a 100 meter wire. Find the dimensions of the lot so that the area is at maximum

**10th**

how are hypotheses and theories related?

**mcckc.edu**

A 0.10MNaCl solution is blank (iso/hypo/hypertonic) to a 0.10M glucose solution

**chemistry**

Compute the boiling point of this solution 25.5g C7H11NO7S

**algebra homework**

Kim starts to walk 3 mi to school at 7:30 A.M. with a temperature of 0°F. Her brother Bryan starts at 7:50 A.M. on his bicycle, traveling 10 mph faster than Kim. If they get to school at the same time, then how fast is each one traveling? I have tried to answer this word ...

**algebra**

I need help sovling this. It is a fraction. +5/x-1 + 2-x/x I hope that you can understand what I wrote. Someone please help because I am new at this. Help!!!!

**algebra**

How do you factor 4u^2-w^2 because I havent been able to do it? Can someone help with this?

**algebra**

2x^2-2x-1=0 How do I use the quadratic formula to solve this because I am totally new at this and need help? Please show me the steps for this equation,so I will be able to do it own my own. Thank you.

**chemistry**

Two mercury-glass thermometer are labelled T and D respectively.On T scale, at 1 atmosphere, ice melts at -10T and pure water boils at 80T. On the D scale ice melts at 20D and pure water boils at 100D at 1 atmospheric pressure. (a) Derive an equation relating the two ...

**chemistry**

yes

**chemistry**

two mercury-glass thermometer are labelled T and D, respectively. On a T scale, at 1 atmosphere, ice melts at -10T,and pure water boils at 80T. On the D scale ice melts at 20T and pure water boils at 100T at 1 atmospheric pressure. (a) Derive an equation relating the two ...

**4th grade**

5+5+5+5+5+5+5+5

**math**

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