# Posts by Sammi

Total # Posts: 116

**History**

Whoa, that's alot of years!! Thanks!

**History**

How many years has it been since the first century to today?

**physics**

A transfer of heat occurs with a pot of 8.0 kg of water that changes from 400 degrees kelvin to 320 degrees kelvin. How much heat is absorbed or given off?

**physics**

i'm not very good at physics and i have an exam tomorrow!! for the first one do i use the formula F=-Kx to make the answer -4500 ? and for the second i really have no idea what formula to use what is the value for k if a spring stretches 0.4m when submitted to a 1800N ...

**physics**

i'm not very good at physics for the first one do i use the formula F=-Kx to make the answer -4500 ? and for the second i really have no idea what formula to use

**physics**

what is the value for k if a spring stretches 0.4m when submitted to a 1800N force? How much force is needed to keep a 23 kg box moving at a constant velocity across a warehouse floor if the coefficient of friction between the box and the floor is 0.88?

**physics**

In Harmonic Motion how does the value of g affect the time period of a pendulum?

**physics**

The horizontal acceleration of a projectile is what?

**physics**

The slope of the tangent on a position time graph equals what?

**THS**

A motor does 25,000 J of work in 250 seconds. What is the power produced?

**math**

0.57 repiton

**Physical Science**

can you uncramble this? F E C Y M R A N T A T S I D M I L O W O H F R S

**Science**

Hey....I need help with my homework. I'm in 9th grade, high school. Its pyhsical science about Atomic Math.. Heres the question: Multiply the atomic number of hydrogen by the number of electrons in mercury, which has an atomic number of 80.

**mustangs/horses**

well i know some good pics.

**Math**

How do you solve a double sided variable? I am not sure what you are asking. Even so, since this is not my area of expertise, I searched Google under the key words "'double sided variable' math" to get this possible source: http://en.wikipedia.org/wiki/...

**unscramble**

dioakk earbs