Recent content by kokenwa

Suppose some astronauts have landed on Jupiter. (a) When Jupiter and Earth are on the same side of the Sun and as close as they can be to one another, how long does it take for radio transmissions to travel one way between the two planets? Suppose the astronauts ask a question of...

Suppose some astronauts have landed on Jupiter. (a) When Jupiter and Earth are on the same side of the Sun and as close as they can be to one another, how long does it take for radio transmissions to travel one way between the two planets? Suppose the astronauts ask a question of...

there are none. it just shows PbBr2

the Ksp of lead (II) bromide is 6.3E-6. A large amount of PbBr2 sits at the bottom of a beaker with water above it. Equilibrium is reached. Write the chemical equation fo rthe dissociation of lead II bromide as it dissolves for which the Ksp applies. -How would i go about solving this problem?

i got 3.066nC for the sphere by multiplying the transfer charge by the nC charge for the sphere but i can't find it for the rod. what do i do next?

the charge on each electron is 1.6E-19C or 1.6E-10nC.

physics--electron charge transfer A metallic sphere has a charge of +4.2 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.3E9 electrons are transferred. What are the charges of the sphere and the rod now? i don't even know where to begin. can i get...

i put in 2.35 x 10^-5 and it was still wrong

Homework Statement Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio (assume it to be an isotropic source) and notices an echo from the cliff. She claps her hands and the echo takes 1.2 s to return. (a) Given that the speed of sound in air is 343...

A pole-vaulter of mass 60kg vaults to a height of 6.0m before dropping to thick padding placed below to cushion her fall. What is the speed with which she lands? -I know it has something to do with momentum, but I don't even know where to begin on this one