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E.g. multicellularity and the eye?

Please explain! And thank you! :)

How would I separate an equation such as the one below in its half reactions?:

P4 + OH- --> H2PO2- + PH3

Since P4 oxidizes into H2PO2-, I am confused because I'm not sure when to include the OH-, or weather I should write the whole H2PO2- compound in the reaction vs. just the phosphorus part.

And I am confused for the same reason for the reduction of P4 into PH3; should I include the OH- in the reactants? Should I include the whole PH3 in the products or just the phosphorus part?

Thank you and please explain!!!

Why do redox reactions occur in acidic or basic solutions anyway? Why can't they be in neutral solutions?

Thank you

Please explain!

What's the importance of RNA polymerase in recognizing the promoter as DOUBLE STRANDED?

This is mentioned in my textbook and I'm a bit confused

Thanks!

What is the root mean square speed of H2 if the root mean square speed of N2 is 500m/s?

My answer is 1864.

But my textbook says its 2050.

I don't understand how it got 2050.

Thank you.

My professor says they can only remain in the places they were synthesized however aren't there ATP transporters?

I know of the equation deltaS(surroundings) = -deltaH(system)/T OR deltaH(surroundings)/T

but is there an equation like that for deltaS(system)?

And thus would deltaS (surroundings) = deltaS (system) for a reaction?

Thanks for the answers!

Please explain!

Please explain!

Thank you!

In some of my homework questions, gauge pressure = - pgh while other questions shows gauge pressure as +pgh but I don't know when its positive or negative

Thanks for the answers and please explain!

I was thinking the conservation of energy equation would just be 1/2m(v1)^2 = 1/2m(v2)^2 since there is no height thus no potential energy? but then that wouldn't make sense to say kinetic energy is zero if the object was initially at zero velocity. So then would conservation of energy not apply?

How else would I relate the initial kinetic energy and final kinetic energy in this kind of scenario?

Please explain and thanks for the answers!

When do you plug in the given values into your equation versus plugging in a variable ?

Example: a plane flying horizontally at an altitude of 1 mi and a speed of 500 mi/h passes directly over a radar station. Find the rate of which the distance from the plane to the station is increasing when it is 2mi away from the station.

Solution: so i used x^2 + 1 = y^2 for my equation and i drew a triangle with hypotenuse y=2 and side lengths 1 and x=root3.

So how do I know whether to plug in root 3, or "x" into my equation, and then diffrentiate to find dy/dt?

The answer plugs in "x" and diffrentaitions that but im confused because I always thought constants would be plugged in. Isnt root3 a constant? \

Thanks for the answers and please explain!

if so, then why wouldnt internal forces be included in net force calculation ?

Please explain! thanks for the answers!

the first equation is v2=v1+at

the second equation is v2^2 = v1^2 + 2ad

If the values of a=-10, v1=-5 and d=-100 were plugged into the equations, then v2 would be -45 in the first equation, but it would be +45 in the second equation. Why is this so?

It seems that all v2 values calculated from the second equation would be a positive value.

Thanks for the answers and please explain!

So because of that, is that why we move backwards when a car accelerates and move forwards when it comes to a stop? So that we can remain in our initial state of inertia?