Recent content by SMUDGY

I need to plan an investigation to find out how changes in the consumption of protein in the diet influence the excretion of urea in humans. it is possible to determine the urea concentration in urine using the enzyme urease which catalyses the following reaction: Urea+Water --> (with...

Does anyone know the actual value of the enthalpy change between sulphuric acid and sodium hydroxide. Also what volumes would be used when doing a calorimetric experiment when you put the chemicals into the polystyrene cup

I am to design a laboratory experiment to compare the energy conversion rates of two standard methods for solar energy to be 'trapped' for domestic use. See below*. I need to compare the two systems and find out which is more efficient. The energy source should be a standard 150W light bulb...

Another question is: A circuit containing a switch, Vo, a capacitor and a bulb in series. The capacior is originally uncharged. Describe the behaviour of the bulb from the instant the switch is on until a long time later. I think there will be a delay for the bulb to emit light and...

-------------------------------------------------------------------------------- If a charged capacitor c=35 micro farads is connected to a resistor R=120 ohms how much time will elapse until the voltage falls to 10^6/D of its original max value? Ciruit contains a switch, resistor, emf and...

Another question is: A circuit containing a switch, Vo, a capacitor and a bulb in series. The capacior is originally uncharged. Describe the behaviour of the bulb from the instant the switch is on until a long time later. I think there will be a delay for the bulb to emit light and...

If a charged capacitor c=35 micro farads is connected to a resistor R=120 ohms how much time will elapse until the voltage falls to 10^6/D of its original max value? Ciruit contains a switch, resistor, emf and a capacitor in series. Relevant equations are Time constant= T=cR and...

aparently you don't need to know the distance apart and (e) is an electron which is 6.11 x 10e-16 or something. There are other motion equations such as a=v-u/t etc i,ve drawn it out but still doesn't make sense to me like its lacking detail but i haven't got anything missing

-------------------------------------------------------------------------------- I need help on this physics question: An electron is shot at 10^6 ms-1 between two parallel charged plates. if (e) = 1 KN/C where will the electron strike the upper plate? Assume vacuum conditions. I think...

Physics Question about an electron I need help on this physics question: An electron is shot at 10^6 ms-1 between two parallel charged plates. if (e) = 1 KN/C where will the electron strike the upper plate? Assume vacuum conditions.

I need help on this physics question: An electron is shot at 10^6 ms-1 between two parallel charged plates. if (e) = 1 KN/C where will the electron strike the upper plate? Assume vacuum conditions.

What equipment do i need to use to do this experiment and how do i set up. I am stuck on this cause i only need to plan it out. I won't actually be doing the experiment

i am using a vertical filament lamp. how would you measure the distribution of the intensity of the wavelengths of light in the filament lamp.

i have found that you can use diffraction grating to measure the wavelength of light and use the rearranged formula: lamda=sSintheta/n where s is the separation of 2 slits and n is 1 for the first spectrum. But i am unsure how to do a diagram for it and a method of how to carry it out

That is a different scenario to the one i am doing now. It doesn't provide enough information to me because it talks about a photocell and i am using an LDR and i need to work out the wavelength and intensity of visible light falling on the LDR. That talks about a laser the procedure to be...