life orientation
Ways in which humans or environmental problems impacts on the community
economics
In your (imaginary) neighbourhood, the general consensus seems to be that 4 out of 5 cars are in good working order. The price for a good second-hand car is 2000$, while malfunctioning ones typically fetch 600$. (a) What is the expected value of a used car
Chemistry
What is the ionic equation for (NH4)2CO3=2NH3+CO2+H2O
Physics
A spacecraft of mass 2000kg, moves at a constant speed of 7800m.s- in space. the main engine switched on for 10s during which time the exhaust gases travels at 10 000m.s-. As a result of this, the craft travels at 8000m.s- after 10s. Calculate the mass of the exhaust gas.
Physics
A 0,1kg bullet is fired horizontally towards blcok A and B, which are hanging from cords. The bullet passes through block A of mass 2kg and becomes embedded in block B of mass 6.4kg. The bullet thus causes A and B to start moving with velocities of 6m,s- and 2m.s- respectively...
chemistry
helloooo? please somebody answer... now i have a bunch of solutions here but i cant figure out the right one and
chemistry
if i solve it by last equation i get something with 2.xxxxx*10^-7 could this be the right solution?
chemistry
what does E=E(A)-B mean?
chemistry
what does E=E(A)-B mean?
chemistry
could somebody just post the solution process or post the formula? thanx a lot
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