Two red blood cells each have a mass of 4.15×10−14 kg4.15×10−14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. once cell carries −2.20 pc−2.20 pc of charge and the other −3.30 pc−3.30 pc , and each cell can be modeled as a sphere 7.80 μm7.80 μm in diameter. what minimum relative speed would the red blood cells need when very far away from each other to get close enough to just touch? ignore viscous drag from the surrounding liquid.

connect the batteries in series and hope

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m