Recent content by Hannah Wallace

So for a lab I had to test three different salt Nh4Cl,KN03 and LiCl. I found the heat of each of them and then in turn found the molar enthalpy by using N*molar enthalpy=-heat. When finding my heat and using equation mcΔt would I use the mass of the water or the mass of the water and the salt?

Then would you make the two equations equal to each other to find the distance?

So x=300t-18?

It'd be negative right?

well since it's at a constant velocity wouldn't it be 18=Δd/Δt ?

time?

would it be 1.5 x^2= distance?

I really don't understand :/

Well I'm not sure how I could use equation 3, without taking into regards car b. what would be the distance be?

Well you know the distance separating the two vehicles is 330 m, you know the acceleration, you know the initial velocity which is 0, and with that you can maybe find the time separating car a from b?

None of them really.Maybe equation 3?

I don't know the separate equations, that's why I am asking for help

Homework Statement Car A stopped a traffic light, once it starts moving again it is located 330 m from car B which is traveling in the opposite direction at a constant velocity of 18 m/s. If car A accelerates at a rate of 3 m/s^2 where and after how long will the two cars pass each other...