If the change in enthalpy is - 5074.1 kj, how much work is done during the combustion?

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

Seven tenths in simplest form fell asleep

When is it safe for you to place a construction load on a concrete structure

1. Work out (show all necessary steps) For what value oft vector 2i + j + k is perpendicular to i - 4 + tk. If A = i + 3k, and B = 2 + 3k then what is the value of AxB?

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip.

We are all in motion relative to? - a tree outside - the building -the earth -the sun

What does force equal? mass times velocity (f = mv) distance divided by time (f = d / t) mass times acceleration (f = ma)

If heat is transferred between two objects, what has to be true about the situation

Why is force a vector quantity?

Using Hooke's law, Fspring=kΔx, find the elastic constant of a spring that stretches 2 cm. when a 4 Newton force is applied to it. A) 1/2N/cm B) 2N/cm C) 4N/cm D) 8N/cm